SRX Handling Problem

[veets]

I recently installed a Pioneer Performance Long Travel Suspension. Ride is fine and Hyfax wear is good. The problem I have is that with deeper snow the sled feels unstable and loose. The ski’s are not darting but the whole sled shoots right and left, more in the rear. If I am riding on hard pack everything is great, handles like its on rails. The problem is also more apparent if I am going down hill and let off the gas quickly. After reading a lot of posts I am thinking it is either too much ski pressure or maybe a transfer problem.
1998 SRX, 190 some picks, 8” carbides
Any ideas?
veets@cyberia.com