1 thing you can try is wind it up in 1st to say 5400 let off staring in first then get back on it if it pulls past the wall at 5500 it is fuel letting off allowed it to catch up!
But my feeling is your lash is set to tight floating the valves take a turn of pre load out and try it can't hurt anything. then maybe another assumimg you have them set the same most people struggle setting the lash and are all over the place from .150 to tight to .030 which is close to right.
