💯 Infact from what I can tell I'm the only one that's ever heard of valve spring shims. Again engines are engines there's an odd misconception small engines are in a different category. Yes you want the spring compressed they even last longer that way. Now it is just a small engine yes it will...
I enjoy reading the back and forth on this stuff. Quickly as a shop do it the right way and this only due to save our bum from lack of service and neglect. As a shop for myself that changes his oil uses API rated CH-4 cj-4 or CK-4 oil 20w-50 and cleans his cooling fins id drive the pin in ream...