that was the problem humble
the p38 lives and dies by the use of its flaps...
on that low speed over the top put in full flaps to gain slightly more control to aim as you stall out and fall back toward the spit.
btw...
the P-38L had the ability to cash in its dive flaps as a maneuver,
the dive flaps still had a similar reaction on the aircraft at lower speeds, it still created forces that pushed the nose up at low speed just like it did at hish speed to compensate for mach tuck of the nose where it violently pitches down...
the p-38L pilot would use this as a momentary advantage in which when toggled it would pull the nose up 10 to 20 degrees enabling the lightning a quick snap shot at the bandit.
It is my personal belief that this is one of the factors leading to McGuire snaprolling and crashing after he "dramatically" increased his turn in attempts to clear his rookie wingman who was also turning with a ki43.