Very cool and welcome to the forum!
I think I said on one of your other posts I build the same kit a few months ago and other than the tracks really enjoyed it.
I can see some seam lines on the rear fuel drums, you might pick up a tube of plastic putty and some sandpaper and you can fill those and sand out the gaps pretty easy. Plus as Disastermaster pointed out you might take some epoxy or other strong glue and attach the tracks to the tops of the wheels, be careful I broke the wheels off on mine and had to glue them back!
Aside from the nitpicking nice work though!