As for the rings. If you have it apart and are gonna do all the work to be sure the seats are cut, valves lapped, new valve stem seals etc etc...then whu ise the old rings? Its afew bucks more and youll know 100% that EVERYTHING in the engine is new and trouble free for the next 70,000 miles or so. Thats if you do regular oil and filter changes AND check the valves at the required intervals.
As for new shims...get the sizes you need for each valve recorded and get a PM off to Ray ( Ghostgs1 I think ) and tell him what you need. What you do is get the ones from him at the Shim Club, then once your old ones are out you mail him the take offs.
If the valves give ANY resistance sliding thru the valve guides, DO NOT force them. Just hold them up from the bottom and take a small file and go around the stems to smooth off any worn edges. Forcing them scars the insides of the guides or could actually break them..not good.



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