Ok, all good. Another solution option to add to the mix. Regrettably in my case though, one of the metal mounting tabs had worn down pretty short, leaving only a short straight piece before the tab curved at the bottom, so little to grab onto. Hence my epoxy solution preference. On a side note, the original retail version guides provided a combined metal pin plus epoxy fixing solution, which intrigued me at the time. Why introduce an eventual metal against metal wear condition in the black metal gear selector box?! The penny must have finally dropped at R&D HQ and they've since removed the metal pins from the current version.