Hey Bob, Yeah I heard that too with the Counterweights. I was even considering cutting a slot from the top of the Aileron to install the threaded rod for the weights. I would make a 90 bend (or close to it) in the rods and lay them into the aileron. Then replace the cut out portion. THis would guarantee the counterweights couldn't pull out.

Still scratching my head on this but you are not the first person to tell me this. Seems like something that should be addressed up front.