Valve to piston clearance

How to Check Piston-To-Valve Clearance With Clay
Here is what everyone is gonna tell you to do.

I was told that too but I didn't feel like spending the money on a single solid roller lifter just to check clearance, "hey it's cheaper than having to build another engine" OK sure, your call there @Dusterfreak.

You could get a spare hydraulic lifter, gut the internals and stack washers inside to turn it into a solid... not sure how prevalent Magnum engines are in Finland though