they'll eat the bill to fix it. Don't worry, they will or you will make them with a lawyer. You win regardless of your profession. A guy i work with has been a mechanic for the past 25 years, he forgot to tighten a steering shaft bolt, and the guys steering wheel detatched from the rack, and he ran up on a curb and bent a wheel and his running boards...our shop replaced everything wrong with the guys car related or not, and flushed every fluid and did every service...its called customer service and CYA...if they don't do that, they're fucking useless. The mechanic that messed up will be doing a lot of free work to your bike, thats for sure.