Drilling Chainring Bolts

Had the same problem. Just got it sorted out. Went to Brick Lane and a guy called Super Ted did it for me for a tenner. I saw him do that and it took quite a bit o drilling, grinding and what-have-you. He knows what he's doing, I'm telling you, and if I were to do it myself it would take a lot of sweat, swearing and maybe I would also end up with damaged spider/chainring. Got his number if you want, just PM me. His services are highly recommended.

I think this is the easiest option.

Thanks for your tips diable.