Great info and suggestions, thank you.
Update - I cleaned the light sockets (just in case) then also cleaned the ball count copper tabs and found when pushing in on one of the blades, the lights then came on, so between cleaning and bending that blade slightly to make better contact, - I now have lights (well, # 2 isn't working, so that one I'll keep chasing)
So far, I've found 2 fuses under the playfield - the one I found this morning (thanks to your suggestions) was close to the flippers, labeled as a 10 Amp Slo Blo (although there is an 8 A fuse in the holder), I'll check it later with the meter, but visually looked ok. (The other fuse I think was a 5A, but didn't seem related to this issue) I was so hoping it was just a bad fuse... thinking right now, possibly bad solder points or the black "relay" (??) that pulls the flippers closed? (Any way to check that item?)
I've checked the "white playfield" roll over, doesn't seem to do anything (perhaps that's why I have a replacement coil for that one. game came partially dis-assembled) I'll look into the "flipper open" relay. I'll also check the EOS's, just in case (I only had about 10 minutes this morning)
And yes, that's what I needed on the ball count. It came with a 15/16" ball (for the tilt) and three (3) 1 1/6" balls, so for some reason I thought all 3 were to be inserted, so only two (2) are needed - that's answers a lot of questions (I was getting all kind of issues by putting 3 in there..lol)
Again, appreciate the help and will report back on progress..or failures...lol