I'll try to make this as short as I can. A little background: I have a Trek 7100 Hybrid that I have had for about 4 years. I am 6 foot and about 285- hence the reason for my starting to commute with the bike. Can't really jog any more- kills my knees, and dieting doesn't help much without the excercise. My problem is that I am blowing spokes out on the rear wheel. I had the original wheel replaced (32 hole) with a 36 spoke wheel, but I just found another broken spoke on that one today- about 10 rides on the new wheel. I have heard that a 42 or 48 spoke wheel from a tandem would be a good idea, but none of my LBS seem to be able to find one that will fit my bike. Besides any other advice anyone has- does anyone have any good online sources for wheels? My main problem is that to build one most places want a lot of money (I have been quoted as high as $600.00) so I am willing to try and do it myself if I can find the right parts. I'm sure I'll have more questions, and thanks in advance on any help anyone has!