My series 80 P14 with rounded grip frame runs great now that it was converted to a series 70.No MIM parts etc.
NO MIM parts,
I don't think so since the frame and slide are both MIM.
Short of the FCG, which part will not hold a trigger job, the rest of the parts are not half bad, and you may have thrown out the baby with the bath water by replacing them.
I thought the frame and slide are considered cast?? Not that cast components should be a problem. Ruger make strong dependable firearms and most components are cast and have been for a very long time.