Installed an elastic velcro strap into my left gauntlet and the test fit is a success! It takes a bit of effort to put it on myself, but it is possible. With the sleeve and foam filling up the space, there is hardly any slack and hence reducing the lateral roll. The elasticity of the strap will not cut my circulation off completely...I hope...
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*After this photo, I trimmed down the foam on the bottom so it's not visible anymore.