i toured 4200 miles without incident this summer with my bob. i assembled it at the airport, checked it once about 1000 miles in but never with a torque wrench and never tight enough for it to feel restricted. i also never had oscillation problems, even at 44 mph. so, my suggestion is if you can't access a torque wrench then tighten it to a point just before it feels restrictive then check it after the first few rides to be sure it hasn't backed off any.