Usually because you're out of trim, you're trying to force the shot that isn't there. I don't have that problem much. I get nose bounce, sure, but I try not to force it. I hit combat trim (and then turn it off, or heck, sometimes I just leave it on). Heck I just got 6 B17 kills in a sortie (I was in Bf110G2) in the past couple of days. I had no problems.