Thanks for that. I will try to find the KTM dealer. I have been searching to no avail to find the diameter of the shims in my twin. Lots of info for the singles but always hard to track this sort of thing down for twins... What I did find is that the shims are 'semi-spheres' and that the intake and exhaust valves are different sizes although I imagine this does not necessarily mean the same for the shim/semi-sphere sizes??
Another thing I read in my travels is that on this bike the clearances tend to get smaller with engine wear so it's likely that I could just sand down the existing shims?? The dealer who did the clearance measurement seemed so slack about the whole thing I'm not sure I would trust his figures...
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