TLR 22t 4.0 assembly/gear box issue
 

So I was building my 22t 4.0 kit, I got to the transmission building step C6, I noticed when I assembled it using the standard diff and idler gear spacers in the correct orientation, the diff gear binds heavily on the inside lower portion of the gear case, I double and triple checked that I had the correct inserts installed properly, I had to end up flipping them up so the diff is now moved up, now the dog bones barely go into the diff cups because I don't have the +3mm TLR234089 hubs in place

figured it out, took the gear box apart just now, there was a piece of flashing sticking out on both gear box halves, hit them with a dremel, reassembled, all good now!