I haven't recovered a C330 but if you can get the old leatherette off pretty much intact, just use it as a pattern.
Pliobond or a GOOD double faced tape are the way to go to install it.
If you have a set of leather punches, holes are no problem. Well, except the big 'un. For something like that I've used a compass with a hobby knife instead of a pencil to make the cut.
The knobs should have set screws in them <1mm iffn' I remembers right.
Double faced carpet tape is too thick and not really permanent.
Pliobond. The old standby.