well funny you should ask
was hard as hell to get it started the first time
wore the wheel down on my box....then killed the motor in my friends starter box (lipo) then rigged my starter box to move the wheel up to make contact and finnaly got it started.Now I have a bad glow ignitor I gotta get replaced too (gonna take my kit up to the lhs tommarow and get it all worked out)
after we got it started the first time though and heated the engine the starter box turned it over just fine.
oh and the engine I'm breaking in is the stock one >_>