I measured the shims that were in there from the factory and they came out to 1.8mm. So I went ahead and ordered the 1.5mm ones. The thinner shim should give me the clearance I need. Hopefully it will be enough preload not to have noisy valves but not too much to open the valve. Thanks for all your help. If there is anything else that you could recommend...I am still open to suggestions. Do you know how much one of those tools costs? Thanks

__________________
George Carstens