Right now I am running stacked with 181 at the crank and 70 on the SC. I have the SL55 pump and adj. regulator and haven't really had problems but I feel that my duty cycle must be 80% or higher, I'd like it to be under 75%. I agree that I haven't seen a lot of success in this area but in looking at the Bostech, I'm only investing under $200. I love Robs' stuff but the $s here are too much for what I'm seeking. I'll keep this updated when I find a little more info.