Tokyo bay custom tracks are good if a smaller track is needed to practice linking drifts(its almost like you can make your own Odaiba or "Streets of Long Beach" courses)..but trial mountain can definitely be linked...as far as adj lsd..to be quite honest w/ you, I know its there for a reason and adjusting its values will yield different characteristics upon accel and decel, but once it became clear that a majority of the rwd cars on this game seem to come stock w/ a 1.5way lsd, I barely even buy the upgrade...usually only invest in one when I'm making a 10/90 split awd "drift" car, so I can just lock every thing up front and back