Aimez, there is a black plastic clip that fixes the gaiter to the gear knob. From the factory the fake leather is wraped over this clip from the top and folded all the way under.
When I fitted my allu Seat Sport knob I spent ages getting this fold/tuck just so. When I PX'd the
Ibiza I fitted the old knob back on and just clipped the gaiter on the simple and quick way with no fancy fold. This made the fake leather quite loose (maybe by 1/2 or 3/4 of an inch.
Give it a go, I reckon there is at least that much folded up under the black knob clip thinky.
This is starting to sound like a foreskin
problem so I will stop now.......................