I ended up buying (2) SS captured guiderods, and setting them up for different purposes. I have the 22# setup for the hot 10mm stuff, and a 13# setup for my 40 Major USPSA loads. The factory RSA does just fine with most 10mm ammo (even the hot stuff), so I'd just run that for IDPA & a Extra Power spring for the heavy stuff.
GEN 3 20LS/20SF/21SF/30SF/23/34/26
GEN 4 17/19/21/34/35