After trani rebuild and head stud install, truck runs fine till 2700 rpm. Then smooths back out at 2900-3000 rpm. Transmission was built with a goerend triple disk and billet input shaft. Input shaft had to much end play on initial build so had to re-pull for adjustment. The first time there were not any shakes. While truck was down, head studs and airdog were installed. Has any one experienced this issue? Are the symptoms a miss adjusted valve? Thanks for your time and help in advance.