i'm currently shimming my valves on my 05 YZ 450F. My exhaust side are all in specification. But my two intake valves(the two closest to the carb) were out of specifications(it was more than my biggest feeler gauge which is 0.25) and i put the biggest shim i have in my kit which is a 3.50 and it is still out of spec so any help here would be very great... i have no clue what to do at this point?
The recommended intake specification are 0.010- 0.015
The recommended exhaust specifications are 0.020- 0.025