I just attempted the TB cleaning last weekend and ended up with the fluctuating rpms issue after everything was said and done. It will jump from about 1,200 to 2,00 rmps every second once warm. I had heard mixed opinions on whether or not to move the butterfly valves while cleaning them and i decided to move them a little bit. Big mistake, the relearning process wont take and I put in the shop this morning. Hoping I wont need new TBs.