Mark Langford wrote on web page Note how I had to mount the sticks entirely to the lower spar cap. If I could do it over again, I'd add extra spruce blocks inside the spar on 8" centers for the job, and leave the caps alone. That's what I did for the center stick, but that doesn't help me now.
---------------------------------------------------------------------------------------------------------- Mark I am planning the following and wanted to run it buy you for mounting my controls to middle of the spar. with no blocks pre-fitted to hold control when building. I thought of using say 1 inch dowel, drilled in lathe to required mounting bolt size, then drill the spar webbing all the way through as you would the WAF , then drill 1 inch hole in one side of spar webbing. insert the 1 inch dowel, epoxy in place, bolt it with cheap bolts till dry, then sand the dowel down flat with webbing, repeat in the other three bolt locations, then bolts are tighten trough the dowel and not squashing the webbing, taking the place of the spruce blocks. I hope that make sense.???? To me that would be very strong . Phil Matheson