Have an lmm that seems to lose reverse when it gets up to temp, everything else seems fine, works fine when it’s cold but seems to do it when trans temp is around 120 and higher, range shift inhibited pops up with no engine light but got codes p0711, p2761, p0878 when I hooked the snap on scanner up, trans was built by Big Dipper years ago, going to be pulling it into the shop soon to take s400 setup off and go back to vgt so figured I’d see if anyone has any ideas or a place to start for when I pull it into the shop, thanks