I have a Wavebird controller that has a very worn left directional stick cover. I figure I can either repair it myself or enlist the services of someone else to repair (and clean) it. But I've never done either of those things before, so here are my questions. If I were to repair it myself, do any of you have any recommendations about which (if any) aftermarket replacement sticks I should use? And if I were to pay someone else to do it, do you have any recommendations for who to ask?