Prepped and painted the main spar gussets that replace the 7A landing gear brackets. I had difficulty getting even standard bolts to go through the spar holes (the 3/16 ones). It seems that on the left side the outside plates of the spar are a little missaligned. I cleaned up the plate holes and then I could get the bolts through (I had them installed only to have them alinged so as to drill the sidewall holes).