for £20 mate send them to paul, i did my last set and its a fooking long process, here it is if you decide to give it a go, but be warned you wont be able to knock one out after
1. oven pride
2. depending how bad the sidewalls are you can start with 80 or 150 using a block
3. 240, 320, 400, 500, 800,
4. 1000 avlon pad wet, 1200 wet, 1500 wet, 2000 wet, 3000 pad wet
5. brasso
6. auto sol all over the rim and polish using a machine ( i use a car polisher/ compound machine)
they should come out flat no marks and gleaming like glass
hope that helps