The right hand thumb grip had already gone on mine so cut it all off!!!
It was a bit of a faff to do that bit, the rest was easy.... here's how!!
1. Remove thumb grip completely including the seating area, this will be the bit that the polymorph will go into ensuring a snap fit later.
2. Warm the polymorph in fresh boiled water, nice and hot. The granules will form together. Mould into a flat shape in you hand and form round the exposed thumb grip, pop a bit of oil on (I used olive oil) as this will help releasing them later. Mould into shape, you can mould to the perfect size of your thumb and fingers. Cut of excess with a craft knife, car full though!! The polymorph is clear when hot and goes white when cold. You can see this in the pic below.
3: Remove both grip when completely cold!! The oil should help with this. You can then trim of any excess and give a light sand.
4: Pop them back into boiling water for a few seconds so the go clear again and pop them back on the steering wheel. You can then smooth out any lumps and bumps. Keep them wet as your fingers will glide over them more when moulding.
5: Sand down very lightly with wet n dry.
6: I used high build primer to get rid of any small imperfections.
7: Wet n dry to a smooth finish.
8: Paint (use a nice colour, i just clearly picked up the first can at hand!!)
9: laquer.
10: Go ooooooooooooh!!!
11: Let them dry overnight
12: Fit them on and praise the lord for polymorph!!!