risky

One more thing...on the wing tip tank things...sand them on the top and bottoms to match the surrounding wing surface...do not sand or change the end of the wing part. I just sand the tanks on the top side and bottom side....you will have to match the leading edge contour area of the tank to match....this will reduce a lot of drag and it gives you more lift..not much but you will see a diff. on landings...much easier.
If you need pics I can do that...I have a old fuse in the hanger.
C