It has been a while since I downloaded your aircraft.
The laser v3 you made is not that bad.
Just a few modifications.
I am waiting for your update.
Please make a complete model.
The defects are
1, the cockpit floor and the side of the fuselage are interfering with each other, causing turbulence on the right side. Separating them will solve the problem.
2,Pair SG and SW after separating them.
3,Pairing of each control surface, pairing of gear
4,Delete engine and improve frame rate.
It will also reduce the time for first loading.
Just make the exhaust pipe and it will look the same.
The good thing about the aircraft you have created so far is that the frame rate was high.
5, apply texture to the spats properly.
There are some issues with how you set up the textures, but the rest will be good if you set up the AV properly.
I don't know why you are posting with so many error messages.
I made AV and CS.