I have been working on this for a few days.The fit of the cockpit(Which installs from underneath) is very tight,I had to clamp it down to make sure that the wings fit properly(i hope)! 
Nice job. I have this kit in the stash so watchin closely.
I will post updates as I progress!
I also have this kit, and I too will be watching!
Glued up the starboard wing and the fit was good.I test fit the port wing and it will be a problem.It is a known issue so I will find a way.
Looks like a good fit there. Why only on one side though? Brett Green has a different method for assembly on this kit and gives a good write up on hyperscale. Maybe worth a google.
As expected,there is a gap at the wing root.Not a huge deal,just a little extra work required.
Glued in some sheet styrene and now it is ready for putty. 
The problem has been sucessfully dealt with. .
ya, putty! Doncha love kits like these? 
Believe me i have built much worse!The ICM TB-3 Zveno was a nightmare!
I started to build this model(the one with the skis) an the fit was so poor, like yours, that I gave up and put it back in the box. After watching you run into the same fit issues, I don’t feel so bad- maybe I’ll dig it out again.
Its not that bad!I consider the fit problems to be a minor inconvenience,I have decided to put the wheels on instead of the skis.The parts are included but not how to install them.Where can I find the instructions for the landing gear online?
Put on the landing gear blisters and they did not fit too well either, 
Painted the underside . 
Nice paint! did you get the instructions? AM used to have a website with all the info on it. Otherwise I can scan for you my instructions for the IL2M3 I have, should be the same gear?
Thanks!I found a site that had the instructions!