Thanks for the link. Looking at it I also realized that I had seen it in addition to hearing it firsthand from Tom. I edited the original post to include the link.
4onthefloor - I agree with your comments completely. Just needed a little hand holding here.
It would seem to me that simply drilling a small hole in the top of the lifter would be a better fix that attempting to grind a slot on the side.
I'll get back to this thread once the engine is back together and running for an update.
Don