Why not send out your resume to all the domestic bike companies, and see if anything turns up for a mechanical engineer?? Also, you could contact MANY frame builders to see if they need any apprentices. Think bigger than taking a year off to work in your LBS! Fixing bikes, and designing bikes, are really two different things. Maybe go to one of those independent bicycle builder shows, and talk to some frame builders as well. Dare to dream, but have the discipline to make your dreams happen.