I have a 2010 Trek Soho S. On the Trek site it says that the cranks are Bontrager Satellite Nebula. The length was 170 mm. It says 26.8 in the section that says "Bottom bracket" on this site.

I ordered the Origin 8 track black crankset. This: http://cgi.ebay.com/ws/eBayISAPI.dll...#ht_1443wt_930

The main thing I'm concerned with is the tension that should be applied on installing the crank this time. Apply as much force as necessary or go for a specific amount of torque? If I regularly tighten my cranks, should I not have this problem again?