Seeing as I've been through a complete frame replacement for a broken motormount tab, I feel I have $0.02 to toss in here.
I stripped the bike of all bodywork, but still rolling, and took it to the dealer for the frame replacement. $3,100 (included radiator too, but frame was all but 100). I couldn't find ANYONE willing to weld it, something about cast aluminum in a stress bearing connection.
I opted to replace the frame (on insurance dime) rather than total bike because I would have lost out big-time on the loan payoff.
I'm glad I replaced the frame (and other damaged parts) because the bike is fine now, and right.
Independant of the sliders, that portion of the frame is weak, and breaks easily.
If you end up repairing, there are great dealers to get parts from. I use MrCycles in Asheville, NC, and was WELL below the local dealer's prices.