New to the forums and I'm proud to be a Clydesdale! I'm 6'4" and 275lbs. I got back into riding after years off to get more exercise, and so far it's been great to be back in the saddle! Wish I was there more! Last year, bought a Giant TCX and its been a great bike. This summer I developed a ping/popping noise while riding and generally while under strain like climbing or hard acceleration. Narrowed noise to the rear wheel. While on a hilly 200 mile weekend ride the noise was infuriating! And embarrassing. After first day the bike shop on the route trued the rear wheel which helped a lot. When I returned home it went to my LBS and they took it apart, put loc tite on the spoke threads, re tensioned and re trued the wheel. All was well until approx mile 400 of RAGBRAI. It's been getting worse since and I'm so irritated I don't want to ride it! I know it has something to do with my size. So what can I do, short of losing 50lbs? New wheels? If so what brand/type/model? I'm looking for any solution here. Of course price is always an issue, but if I can't enjoy my expensive hobby then what's the point?!?! Thanks in advance for any and all help!