just out of interest, has anybody used the Petzl Reverso to rappel on static/semi-static ropes? If so, how did you find it on 10.5mm or 11.00 mm ropes.
Fine. If too much friction then insert a karabiner onto the Reverso loop only and that should free it up a little. Beware that on a very long abseil eg. Malham, there is less friction the more you descend. So lock off your prussik and insert the karabiner into both the Reverso and harness tie-in loop. Big abseils are always easier to manage with gloves, which seems quite rare these days.