ok i think you should try to find harder ball detents for ur spyder, or if its the one that uses teh little metal picee kind of like the old metal nubbins in a mag barrel, then just try to slightly bend out the metal loop so that it sticks into the chamber a lil more, i think that might be your problem. did you ever try to slightly lube the friction discs at all? stick your finger against one side and spin the warp round with teh primer button. hows it feel? a little oily? or no? if not you could try to take some gun oil like Gold Cup and use the prime button and ur finger to rub a small amount of it on each disc side. ill help more later

it sounds like its your detents, but really try to tune the warps dwell too, that will help