I bought a momo carbon ACTION shift **** and a DC sport short shifter.
for some reason after a couple months the shift **** kept turning loose
I noticed that the 3 smal hexagon nuts that is on the shift **** (suppose to tighted the shift ****) is leaving a deep groove on the DC aluminum rod.

Recently i cut a mouse pad and bought those white tape for piping, hope to
cover the DC before mounting the momo. Now the shifter can not be pulled loose,
but it still can be rotated.

Does any body have this issue? Any tips to solve?