Thanks leigh I had started at the back and worked forward welding everything as I went. I had placed the MT6's on MT2 & 3 (as in the type 9 tunnel) then fitted the MT9's . When I went to fit MT 10 & 12 the weeping wailing and gnashing of teeth started. It all had to come out again - still it proved my welding was all decent - it was a swine to get apart.
Anyway for the benefit of anyone who faces this problem in the future I have decded that I will position the MT6's at the front edge of the bottom rail. For my build this seems the logical place to site it as it is the point from which MT4 & MT5 flare out to join MT 10........Im not saying i am right however.
Of course now I have welded it up again no doubt someone will tell me i'm wrong and give me half a dozen reasons why ha ha
