I had same concern about side to side rocker movement. Advice from fabo was to have max around 0.020" side play.
Was this a fresh rebuild? Cam degreed?
Fresh EVERYTHING [read $$$$$] That's what makes this so effed-up. When you pay someone $5000 and then they want another $800 for a dynotune, that's BS, at least, I would think he would run the engine.
