Another 1972 dart swinger

I pulled the engine completely apart, everything looks good, bearings are good, rings are pretty nasty, cleaned up the pistons, spent a lot of time cleaning out the ring grooves, got a ridge reemer and proceeded to clean up the cylinders. Got a little deep on the ridge reem, or looks like it's not far enough down the hole to cause a problem, not really sure. Keep in mind, I've never done this before, any of it. I have built a few things, turbo hayabusa, but never a car engine.

I get that all done, reemed, ball honed and re installed, new cam is in, new cam chain, heads are back on. Ok, great. No, not great, I still have a couple lifters with no preload. That's not going to work because it will, in a short amount of time, break the retainer clips on the lifters.