A couple of minor problems with the 51B model......
1. Main Gear
The main landing gear struts are at the wrong angle. They are 90^ to the ground, instead of being 90^ to the plane of the wing. As a result, the 51B looks like it's about to nose over

.
2. Bomb Racks
The bomb racks are centered on the wing cord line. They should instead be under the forward part of the wing.
See pic below:
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