Next you need pull the pivot rod up and determine where the bolt, which connects the
airbrakes to the pivot rod, will travel through the slot and past the wing surface. Once
this point is located, use the dremel to make a little clearance on both sides of the
airbrake slot, so that the airbrakes will not make any contact with the wings when being
extended and retracted.
Now fit the actual airbrake. Fix them with bolts only for the time being.
Retract the brake slowly into the wing and determine how much each airbrake needs to
be cut (they come a little longer than necessary). Mark the airbrakes, remove them and
cut them appropriately. Mark the sides of the cover and using a large sanding block sand
down the top of the airbrake until it fits.
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