I looked at some photos that I took when I built my P-47 and everyone is correct regarding the landing gear. They have to be installed before the two halves of the main wing are assembled. That is really poor engineering on Monogram's part.
A couple of other things:
1. The The way the landing gear doors are fastened to the wing is very weak. I added some flat plastic to reinforce the joint.
2. The way the guns are connected to the wing is also very strange. You need to glue a curved piece of plastic to the wing. It is difficult to get the curved plastic alaigned with the curve of the wing. More bad engineering.