I just purchased the Givi SR357 from Revzilla and had absolutely no problems installing the thing. I am one of the least mechanical people that I know, but managed to get the old one off an the new one on in about twenty minutes. Like everyone else suggested, just went finger-tight with all five attach points, and then rotated the tightening as it went. Super-easy and everything fit like a glove.
Givi provides a second attachment plate that bolts right on to the SR357, which is their universal adapter. Had that one on in about twenty minutes as well. The top case I purchased, the V47 Tech Monokey Top Case just snaps right on to that and off you go.
I would have a hard time believing that there were major systemic problems with the rail system, but I'm sure that there are exceptions to this where something gets damaged in transit or in storage on someone's shelf somewhere.
2007 M109R Boulevard
2007 VT750DC Shadow
---20 Year Gap For Kids---
1982 R65 BMW