You can put power shift hoods on ultra shift if you cut the slot for the mouse ears, so sure you can - you just have redundant slots.
It would be intereting to try out for sur, I wonder if just removing the coil spring would be enough.
@ArthurDent started
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You can put power shift hoods on ultra shift if you cut the slot for the mouse ears, so sure you can - you just have redundant slots.