This took a little longer than I thought it would but managed to get the airbrakes installed. A lot happened during this portion of the build, but here's a short summary:

• Built up the mounting blocks provided in the kit, lightly sanded the openings to get my servos to fit
• Sanded the base block to follow the shape of the fuse to maximize contact area for gluing
• Built up the push rods which came out to about 60cm in length
• My servo arm hole spacing for push rod attachment was a little off by a couple of mm (33mm vs 35mm per CARF recommendation)
• Prior to gluing the blocks down, I used double stick tape to check position and alignment with the airbrake horn
• The push rod length and servo arm position dictated the point where the blocks were to mount to the fuse, I drew an outline of the block with a pencil on the fuse to help aid in the gluing process
• I glued the blocks to the fuse one at a time so that I could rotate the fuse 90 degrees down to make it easy to align and add weight to the top of the assembly while glue dried
• Once everything was dry, I check servo arm travel and discovered I had some binding between the airbrake and fuse outline for the airbrake in a specific corner (see picture with red circle)
• I had to sand the inside of the airbrake and the fuse outline a bit to smooth out the airbrake deployment
• After sanding and touchup paint added I checked the operation with the transmitter, and all looked good

Mounting block parts (glued)

Mounting block with servo (test fit)

Mounting block parts (bottom view)

View with bolts assembled

Bottom view showing blots

Misc shot of servos with brackets

Airbrake closed position

Airbrake 45 degree position

Airbrake fully open

Push rod detail

Push rod length

Fuse preparation for gluing

Curved block to match the fuse shape

Completed servo and airbrake installation

Binding in this area, both sides (taken after sanding and touchup paint)

Close up of the binding area