These were only problems on the SP1's ('00-'01) to my knowledge.
I've not heard of this problem on the SP2's.
I think it centers around a leak near the weld joint of the tank hinge.
As the bike is leaned to the left on the side stand, it tended to weep fuel and drip onto a wiring bundle, then travel down and drip onto the rear head pipe.
I'm thinking it might be cheaper to remove, drain, and flush the tank, and then apply a tank sealant to the interior (after removing the fuel pump etc.).