well an hour of tweaking two old lifters I now have two gutted lifters with a ball bearing and two steel washers inside, to create a solid lifter with identical dimensions to the original. Had nothing better to do tonight. I'll repeat my test later this week.

Interesting bit about the float. The intake valve is heavier by design and should float first anyway, shouldn't it?

After I sort this out I will figure out what length push rods i will need. Suggestions for source and material?

Jan