You've changed a LOT of things on that gun. It doesn't surprise me it is not quite shooting for you like it was before it went to Springfield. I would expect the difference in the trigger pull and the stocks to have made the biggest differences in your shooting.

If your loads shot fine before, I wouldn't tamper with them. Do a little dry-firing, check your sights as you do for any sign of movement at hammer-fall, and make whatever adjustments in your technique that are indicated. I'd bet that gun will shoot just as good as it ever did, or maybe even better.