I'm shooting a post war ACE, one of the late 70's production guns and recently I've experienced some double feed malfunctions when shooting high velocity ammo like the new CCI Velocitors and I was thinking that perhaps the slide velocity is too high with this ammo. I pulled the recoil spring and compared it to a stock 1911 spring and it looks similar but 3 coils shorter. Does anyone know the weight of an ACE spring? Did Colt just cut 3 coils off of a GI 16 lb spring? If so, should I order a lighter full length 1911 spring or just start with a GI spring and start clipping coils one at a time?