Fitting that damn tamiya recoil in a sherman turret was one of the two reasons i dont use them. The other being the slow back recoil and they fall apart occasionally too. Building a servo bracket system was much easier for me to design and build. And now that that guy makes a servo activator from a tamiya board, its possible to use tamiya electronics if desired.
i used a pershing or tiger bracket on my ez8 that was all tamiya and still had pull the recoil back furter to allow depression for tbe elevation.