I got lucky and got ahold of a 426 with only about 15 hours on it. It was like brand new. Anyways, I had the valves adjusted at 25 hours and the shop said that 2 of the valves were a hair out and needed adjustment. I rode for 26 more hours and took it in for another valve adjustment. This time the 3 intake valves were about .05 mm out and needed adjustment. Anyways, the bike runs fantastic but I don't want to spend a fortune on valve adjustments. I change oil / air filter pretty much every ride. I have read other posts where guys ride these things for years and don't do any adjustments at all. So, is there something wrong with my bike or my shop or is .05mm really nothing and I am wasting my money. Solid feedback is welcomed here. Thx in advance.