How did you clean the cylinders after the hone job? The only effective way is lots of hot, soapy water and a scrub brush, and do it repeatedly. I use Tide, a bucket of almost-boiling water, and a round toilet brush. Scrub, rinse, repeat. Do it again. And again. Hone grit is very difficult to remove from the cylinders, and if it's not removed, it wears the rings out almost immediately.
You've done a half-azzed rebuild, and you got the results some of us oldtimers predicted. Now, pull the engine out of the truck and do it right this time.
Jerry
