How do hydraulic flat tappet lifters fail?

Thanks. The way I see it, why ask for advice if you’re not going to follow it?

I’m also trying to see the silver lining here, since I’ve been wanting to paint the water pump and clean up some other things. I also found the source of my exhaust leaks in the process, so I think it was a good decision all around to pull the motor.
The silver lining is you're smart enough to fix it right this time and not do it over again down the road lol