Before working on the rear part of the frame, I install the braces on the forward fram. This is only a test fit, no drilling done yet as I have to make sure there is no frame is not twisted. It will be done later.



The first task is to reduce the angle between the flange and the web of th frame to 88°.



This operation, warps the frame parts quite a bit (they were perfectly flat before).



To have them lie flat again, some aggressive fluting has to be done. The position of the flutes has been determined so as not to interfere with the position of the screws that will hold the canopy.