Lapping in valves

I thought it best to start a new thread, less confusion.

Id like to hear everyones technique for lapping in the slant valves.

It was suggested to get some permatex lapping compound from Napa, I called Napa and evidently the oil based lapping compound is no longer avail, only a water base which I have read on-line is next to useless.

I can get some compound off of e-bay it looks like but evidently there are many different grits from start to finish and everything in between.

I did find this useful thread whilst doing a search. http://www.slantsix.org/forum/viewtopic.php?t=14394&sid=959f3987bede409291b85587dc9512fe

http://www.slantsix.org/forum/viewtopic.php?t=30918&sid=a50a2c1a25ad64e22514dd02a052cacf

Thanks for any advice