Spitfire Fuse Jig queries.

Well guys got most of the frame pressings done up in dxf format and sent down to our forming guy(still missing some though) and I,m just starting to work out the fuselage jig dimensions etc.Got a heap of pics off the web of spits in Jigs plus a couple sent over from one of the guys over in the Uk..(you know who you are:) ).Now we are using the fuselage construction drawings as references for the major points,i.e. frames 5,8,10,11 and 19fwd and using our 3d fuselage model for the forming boards.Was wondering is there anything else to be carefull of when we build it.I have spent most of my life after my AC sheety days being in welding,engineering shops so know my way around a tape measure,spirit level and a welder so general assembly of it will be no trouble.And yes we are crazy… 😀 Any tricks,traps for the unwary(like us) will be greatly appreciated.