I was trying to use my Helen Twowheels tie down straps on the new RT. There are no round frame tubes to loop the webbing around in the area near the rear seat. The frame supports in the area have very sharp edges. It looks to me like the webbing would be cut in short order. Has anyone seen metal tie down loops that use the mounting screws in the area where the hard bags attach to the frame? Any ideas on using tie downs in some other way?