I'm not mocking you or your tune, and not guessing anything, tested with and without ABS few turns, changed few settings, tested few turns more and changing more, and third changes were close enough.
Enough understanding why body/tires moves how they move and its easy to fix.
Your problem with braking is mostly because of that not realistic approach to tune, LSD, BB, soft front, stiff rear expansion+ stiff ARB.
As you have proved that is one way to get quick car, but there comes problems with brake release etc along that. If you make that same way tune and then adjust it going fast also on noABS it probably goes cleaner and faster.
Long final gear messes rear traction easily, when doing perfect traction tune there is +/-X.X50 scale on final where it keeps traction.
Edit: after testing it on RBR one small adjust, rear spring 9.20 and rear damper extension 6. (Along with other changes mentioned on earlier post)
Sorry to be a bit late replying, been in a meeting the past 3 hours!
As I said, I don't have a problem with braking on that car... when I had the brakes at 5,7 I would be marginally faster on occassion but less consistent, when I had them at 5,5 I wouldn't be able to run as fast as I wouldn't get the right amount of entry rotation whilst trail braking.
Brake balance of 5,6 created the right amount of rotation
for me with this car/track.
Someone else might prefer a different balance.
If you were struggling with traction it's nothing to do with the gearing - it's because your LSD accel is too high at 18. I try not to be too definitive on most settings (as driving style/ability has such a big effect), but anything higher than 15 on that car/track is too high. Irrespective of ability or driving style. For a fast driver, the optimal range was 12-15. For a slower driver, 8-12.
But I stand by what I said earlier - to 'run a few corners' and then suggest changes to a tune that (without intending to sound arrogant!) was among the very fastest out there (I think
@nebularis23 used my tune and was top 10, or very close) is both insulting and ridiculous.
That tune wasn't built in 5 minutes (well, that tune plus the changes I haven't posted yet!)... it was built over 2 weeks of running lap after lap after lap... ... measuring the gains and losses against my own ghost and the #1 ranked time, and making tiny adjustments to gain fractions of a second until it was 'perfect'
for me.
It's not like building a tune for this thread or even the 'tuning forum', where 'good enough' is something that 'feels' nice, and runs consistent laps, but in reality, it's competitiveness isn't measured against anything.
I'd go so far as to say that managing the timing and resulting slip angle of brake release oversteer and setting up getting early on the throttle is the primary key to alien speed in the game.
Being honest, I don't use brake off oversteer excessively, primarily because I'm just not good enough to do it. I know some do this, but they are the proper Alien class drivers, and I am not one of them.
What I'm trying to achieve when I tune a car is to get the minimum amount of understeer in all 3 phases of the corner.
I start by trying to get a good overall rotational balance via ride height (as this allows me to minimise understeer in all 3 phases of cornering), then I fine tune entry rotation with brake balance and exit rotation with LSD accel.
Half of top 50 TT LB guys would change places with different tune, and many of them will be there even with worse tune.
I'm not sure what you mean by the 1st part, but the part in
bold is correct.
In no tuning events, it's mostly the same people at the top.
Then you or him or both are willing to test that tune after my small changes, you are "WRS GT6 Division 2 Gold" guy and stotty top20 TT LB guy, then say did I just broke nice tune..
Yes, I can test it, but I haven't driven the car for a few weeks, and getting even close to the pace I was running originally would take at least 2 hours.. And even then, I doubt I would be able to match my previous times... Without the pressure of competition it's so hard to find the level of motivation to chase that fraction of a tenth that would give you another ranking position.
I'll run the 2 back to back, but might be a day or 2 until I can get to it due to work stuff.
stock gearbox, stock power/weight, only tuned LSD and suspension.
I might try 10 rear camber on the car 
