Used two viton (70D) 012 sized o-rings for inner seals on the valves, two viton (90D) 015 sized o-rings for outer seals of valves (lower unit screw-in valves). I used carb needle seals on the tiny internal valves as noted in the sticky, though I used a generic one as it had better reviews on Amazon (
https://www.amazon.com/gp/product/B01EUFYXAS/), with the grooved side face down. The Seal 17522 was correct for the pump to housing area, the other wasn't needed, must be internal to the motor, which isn't what I was working on, as I just replaced the actual motor unit. I'm going to try to actually size the 17522 seal and post that for anyone in the future that needs it, as that was the only part hard to find and outrageously priced. It was 1/16 or 3/64" diameter from the look of it, and was tight against the outer metal body of the pump housing. I think 041 would fit, but need to measure the old o-ring to be sure. I should have measured the body with calipers before reassembling, but was racing the incoming rain yesterday. All seems to be working after reassembly.