Sell both, buy two 1911s, thank me later.
Okay - okay - Same ammo in both guns? You didn't recently switch to the new longer (OAL) American Eagle in 147 did you? Before I tossed the baby out with the bathwater I'd try at least three premimum JHPs in different weights and see what I got. If it's the gun and not you, my first stop in diagnosing gun problems is ammo selection.