To reiterate on the 4.3 crankshaft problem?

oil pressure was and is fine, there was no water in cylinders, spark plugs say so, all of them were dry.just pulled one rod cap and it ,that particular one, looked fine. there is no metal flakes in oil. ive had the starter checked it tested fine, just replaced the fuel pump a month ago. i'll be pissed if it turns out to be those 2 items. at any rate im still not seeing any signs of malfunction but sure as shinola the crank is locking up, it will spin on occasion, but i can't get it to move by hand and tool.