dirka dirka dirka. Well, you obviously dont want a stiff setup. But too soft will just over roll and break the rear end loose. I have never used the avid pistons, so i cant really comment. I would try the 1.4x3's and the 1.7's. you lose pack with the 1.7's but your jumps are not very large. since you should have the 1.7's in your box, I would try them with 35/32 oils and go from there. the 1.4x3's for me, feel like they are in between the 1.6 and 1.7 in feel. Conversely you use oils that are in between those pistons also. your track is loose, bumpy in spots and not in the best shape. I would soften it up. if you can barely turn the wheel and the rear breaks out, try a stiffer front spring. I tried springs that were softer than the AE green up front and it was just too twitchy. I think the green is a 3.15 stiffness. So try and avid equivalent. if you let of a little and the rear whips around, then you are moving to much weight too fast to the front wheels. if you give it a little gas and it wont steer, then the rear is too soft. stiffen the rear a little or maybe even go up in anti squat a little. I normally leave it a 2, but my track are better groomed. you want tpo ge the right balance of front and rear dampening. I recently tried brown front and black rears because a local suggested it...... lol. it was WAY to extreme from me, kinda like what your talking about, off power steering it would swap end and on power I had no steering. so I went green/green and spring and honestly it feel better than any other combo. I tried the whites in the rear which are 2.10 I think and they were terrible. for me the green/rear is the most balanced spring configuration for the track I run on and if I go indoors, the 2.10 rear springs help with steering.