Hi Mark, the problem I had with the fenders was quite simple, the fenders have some "L" shaped parts that joins the actual fender to the hull structure with some small holes.
With the wheels & tracks in place I couldn't find a way to align them with those holes .
Here you can see the fender with the equipment on, those divders between are the top of the L shaped parts.
Here you can see the solution I tried on the second fender, addind first the L shaped part, and the fender after that..
it didn't worked.
I stripped the L shaped part, glue it to the fender .
Then I had to cut off the part that was joining the tank structure, and just leavin the part on the fender.
I didn't add the antenna supports either, I couldn't handle those PE parts and lost one or two parts in the process, there was no plastic replacments..