That swing arm damage is mental!!!!!! Shocking stuff. I did something similar on my R1. Was very hard to keep the front wheel down in most of the gears and on the motorway it sounded like a 250. Was fun for a while but then it got annoying.
wow, thanks for all the replies. My chain is in good nick so I'll look in to getting a 14/38 set of sprockets to pep things up a little.