depending on the nitro % you're running, you add shims accordingly....higher nitro % generally add shim...and lower % minus shim...too many shims is not good....(from my understanding)...
when you say hotter, how hot does it get?...normally, when you lean it, it shd run hotter....and it's normal...
if you don't have a temp gun, just use a spit test...spit a tear of saliva on your finger, dab it onto the lowest portion of your cooling head (where it joins the crank case)....if the...