Ok, problem solved, it was that the part of ff2 and ff3 that was meant to be 290mm was about 4-5mm too long on either side. I just cut into it with the angle grinder and cut about 4mm off on eithe side. The thing is once i took the grinder out, ff2 and ff3 sprund downward showing that tr1 and tr2 had been forcably bent becasue ff2 and 3 were too long. Ok now to get u7 u1 and u2 fitted
Edit: also it was a very quick fix, less than 15 min