I built one of these last year for a friend. Easy build but for the tracks which are link & lenght and I couldnt get to fit right so ended up getting the fruils and the photo etch for the rear storage which I should have put on right at the end to save them breaking.
If your putting the ball and chain RPG shields on I didnt even try the shaving off the bumps from the sprues. I baught some small beads of eday, flattened the end of the photo etch chain and pushed them on (I think I stole that idea from someone on here)
Good luck with your build sure it will trun out great
Phil