I'm considering buying a high mileage 05 636, it has 30k on it. Seller says it runs great with no issues, it looks to be in decent condition and the price is fair. My main concern is I have seen a lot of people complaining about transmission issues with this bike, mainly problems with 2nd gear. I'm definitely going to ask to test ride it, so what should I look out for? Will it be obvious if there is an issue? Like it just popping out of gear under acceleration? Any other advice would be helpful. I will go over the many things to check when looking at any motorcycle, mostly just looking for common issues to look out for on this specific bike. Thanks.