We will be incorporating revolving turnbuckles in all future tape frames. These can be a friction point but not any longer. Because they now revolve, the build up of dirt through friction is eliminated. Streetly tape frames are already over engineered due to a certain John Bradley and are a spin off from his perversion for high tensile bolts and over fascination with right angles. They are industrial strength. A bit like Blechta's underpants.
Martin - Inventor of the asbestos gusset.