I'm thinking of building up a L H T. (bought a parktool repair book and have been watching tons of videos) I found a 2012 frameset for $470 at bikeparts.com and noticed that the chainstay has a dished out section just behind the BB. I would think this would weaken the tube. Does anyone know why they did that and does it have any affect on the strength of the chainstay. I did notice that Surly says you can crush the chainstay by improper mounting of a kickstand, so this has me a little worried.

Thanks