I just ran truggy in the yard to see if the alumium shoes helped the low end performance.It seems to have help,I'll know for sure when I get to the track.I also got some 1.2 ofna springs, but couldn't get them on after about 2 hours of fighting with them.So still running 1.0 springs.I also leaned the bottom,it was doing the 2 stage idle like in the video someone just put up.Looks like the s7 can move a truggy pretty good.