Hey,starting @ 24:00, I was about to start on opening up the cmp wing bottom: Sierra retract's----well....monthsgo by and Guys--I'm finally about to start this cmp Hellcat, finally. Will give my best to start the (Sierra's, 100 rotating beautiies!!) gear base reinforcement. Obviously, I need to start cutting open the bottom side fuselage balsa sheeting ,(from my assesment): Is there some input on how to go about the initial cutting open of the balsa skin, and removal of the existing (cheap, hot-glued) base , and ribs adjacent to the main gear bay area. These Sierra's- are- works- of - art--I need to do a Marine-precision job of installing these, was about to start removing the well-well "factory installed" ply base, and ribs. From earlier (lost, mutitudes of...) thread comments, I recall the comments to..." use the existing ribs as a 'template " to cutout new plywood ribs " for securing the base to the adjacent ribs, "....it's so cramped in there, reaching in from the open-center-section of the wing...who could remove a rib as one piece (???). I'm foreseeing alot of "trial and error cutting away and try" work, or (I'd imagine" a more planned template type setup,for a word-of-wisdon from anyone.??? Lost awaiting from you f6f "gurrus"> on this right now....a late night>will catch up on this tomorrow---- thx all, in advance... ed sarkisian "sark757"