Ideas on what's causing my click/tick/rattle noise?

The 2nd point, be very attentive & sure of the ring instructions, position-type-orientation-face up. Some rings appear similar to the old ones, but are installed "counter-intuitively", be certain. It seems a simple task,but I've seen um in wrong, & by pros.

I got new rings, they arrived yesterday. I'm going to double check what I installed originally to see if that was the problem.

There was a question of the oil pump being high volume or not. I got two sets of numbers off the pump but I haven't found out what they indicate yet. On the body of the pump I can't read the first digit, but it's _121678. The pump cover clearly has 24563966. More research needed here.

I got the chambers cleaned up. It was very greasy feeling junk in there. I'm thinking if it was just a rich condition the crud would have been baked on but dry. This stuff was seriously greasy and sticky. I had to spray it with rubbing alcohol and use a fiber cup brush in my drill to get it all off, and that took a while. Here's the cleaned up version...

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@Killer6 I talked to the guys at the parts store about the valve stem seals. And BTW this was a real store with real car guys and about 20 feet of printed manuals behind the counter. They were not able to locate any positive seals for a slant. Lots of viton umbrella seals, but that was all. Do you know a source for the better seals?

Sadly, work is going to rear its ugly head for the next ten days or so, progress will probably be spotty till I get clear of the end of the tunnel. :(