i am riveting the side skins in my RV7a and decided to try to fit the WD-721 while i still have access. I ended up making a cutout in the 704 bulkhead to fit the WD-721 leg. Now, the top part of the WD-721 sits flush with the F-704 however, the bottom part is not sitting flush. I tried looking everywhere for obstructions but everything seems to be clear and fits right. So my question is, does WD-721 have to sit flush with F-704 the whole piece? I added pictures