OK, by using Kevin's Video
http://www.youtube.com/watch?v=nvrPpjXKPg0 as a guide to his latest update for the DPS-200 and their weak springs, i have successfully modified my own DPS-200 Paddles in a very similar way.
it was very simple and only took me 10 minutes to complete so i'll do a run through with pictures so anyone else can do it
1) If you wish to remove the spring from the system you need to remove the metal hinge on the paddles which is simply pushed through with a nail or a small allen-key
Disassembled
2) Kevin has used a Nylon screw to modify his units, i did not have any, but i had a wide variety of Stainless Steel Metal Threaded Bolts/ nuts and washers.
i settled on some M3 sized items.
Slightly different to Kevins design, and due to the smaller head on the bolt, i would need to use a larger diameter washer to act as the stopper, with two locking nuts to hold it exactly in place, and also provide extra adjustment possibilities.
this has a second benefit by not needing to drill a hole as close to the edge of the material and risk it cracking/ splitting
3) Next is to line up and mark where you need to drill,
using the washer as a guide you can position it to provide adequate stopping contact with the paddle, and mark your drilling position it with a marker.
As you can see, the stopper needs to be located on the lower part of the paddle mounting to prevent interference with the hinge mechanism
4) Next, size up some appropriate drill bits, one as a pilot that is much smaller than your bolt, and a second one that is only just smaller than your bolt.
The last size is very important to size correctly.
-Too small and you will risk cracking the plastic as the bolt tries to cut it's thread in
-Too large and there will be insufficient material to cut a thread into
5) Drill your holes,
If your paddles are already fitted to your wheel, make sure you drill only through the paddles ad not through the casing of your wheel
6) Cut your thread into the hole
If you have them, using a tap and die to cut the thread is the best way, but if you're careful and do it slowly, simply screwing the bolt into the material is enough to cut a good thread.
I do it in a way that you would use a tap and die
i.e turn the bolt in 1-2 full turns, then back it off 1/4 to 1/2 a turn and repeat for the length of the thread.
this allows the cut material to clear and prevent the bolt from binding in the hole and risking cracking the material or stripping the thread
7) Re-install the paddle and hinge
Reverse of removal technique
8) Assemble your nuts, washer and bolt loosely
9) Install and adjust you stopper for the desired stopping distance relative to the distance of the standard adjustment screw.
once you're happy with the stoppers position, tighten the two lock-nuts up to the washer