Piston and rod bearings installation

Good advice above especially from Redfish. Get a "how to"book and study up!
Recondition the rods to do it right. Pistons should go in only one way as well as the rods.
As mentioned, rings need to be oriented so the gaps aren't lined up. The end gaps should be checked also. There are too many details that need to be done to do the job correctly.