I read the thread on valve adj. , so at 57000 I thought i better do it. all was good untill # 4 intake, i was tight(no clearance) so i had to loosen the allen screw about 3 full turns to get proper lash, at this point conserned but moving on. Then #5 exh is the same and i loosen the allen all the way till it stops and i still have no clearance!! What now. sounds major to me!?