yeah i had the first ersion of those shocks with the 3mm shafts,they told me i was bending them because i was running to heavy of a fluid.
they sent me the new ones with 3.5 shafts and then said run no heavier than 35wt in them.
after one lap around the track i bent 2 shafts i pulled them off sent them back and got the HPI units,awesome thats all i can say they were great the only complaint the boots just crumbled on me so i would pick up an extra set other than that not a better shock to put on the savage unless you put the rock concepts tower on then it gets interesting