They all need a wee bit of fettling but you can get most to pick up support somewhere........what zorst are you thinking of fitting ?
I ride it not polish it. 20,000 miles on it now and it had a wash back in march. I am going for a mini tour around Devon and Cornwall on Monday with my mate so it is pointless washing it.
I've got gilles vcr with my racefit and no problems but did fit 5mm spacers where they bolt to the frame for clearance like the akrapovic does