I've been having a pretty tough time getting the cranks set up on the new MOB frame. I run Profile cranks and had a 5 3/4" spindle, but it was too short. I had about 1/8" crank arm clearance from the chainstay. Now I've switched to a 6 3/4" spindle and its's far too long. I do however have 1" arm clearance from the chainstay on the drive side and 1/2" clearance on the opposite side. Although I have a TON of spacers in to make it all work. It doesn't seem like there is a crankset that fits this bike well. Does anyone have any suggestions with what they run?