If those valves show leakage then normal lapping may not get things right.
First you want to confirm that both of those valves are straight by chucking them lightly in a drill, as even new valves are sometimes not dead on!
If they pass that test then make a sleeve from a section of a Aluminum can you go around the valve stem like 340 degrees.
This is so you can lube the guide, put some fine grinding compound and the valve and then load it into the head.
Next load the top of the valve into the drill and make the chuck tight enough so when you power the drill you can pull on it and touch up those seats.
Of course make sure that the drill chuck jaws only clamp down on the aluminum sleeve.
If things are not too far out of wack then about 2 minutes of this should have things sealing up nice, if not then it’s machine shop time!
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!
1) 1940s 100% silver 4 cup tea server set.
Two dry rotted 14 x 10 Micky Thompson slicks.
1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.
Education is what your left with once you forget things!
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