Dyna Glide ModelsSuper Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
Cut some small strips of emery cloth, put that under your risers. Between the bar and clamp. No more movement no more issues, no drilling, no tapping. 3 min fix I do it on my bike and it works great!
Apes are to motorcycles what a 24" breaker bar is to a 6" ratchet; a longer lever that requires less force to move them. Short of drilling the bars there isn't a 100% solution. The up side you can rotate them to your liking while going down the road. The down side is you can rotate the, while you're going down the road.
I don't see an upside to movable bars, especially in an emergency stopping situation.
THE PHOLY bushings might be the problem.. ive never had any problems with my apes..
poly bushings have nothing to do with the bars slipping in the clamp. ive used an old inertube from a bicycle cut up and placed in between the bars and clamp with great results or centerpunch the inside of the clamps to give more grip. no need to ruin a clamp by drilling it.