Pix added: Best way to clean up valve seats & a couple other questions

[Patrick L.]

Why do you want to replace the valves? The seats look pretty good from I can see from the pics, so maybe the valves are as good. If the valves have enough margin left when refaced then they should last for many years to come. I'm a believer in facing and grinding rather than lapping. You can set/put the seat contact area where you want/need it that way. I don't even lap anymore when finished like I used to. Again, previous questions weren't answered [ pretty normal]. Have you located a grinder ?