Ugarte is like me....The KLR never leaks and it's cheap to ride. Too bad it don't have any balls either.....
I'd pressure test the tank to make sure no weld seams or fittings are leaking, especially with 68K on the bike. I know down there where you work, someone in the maintenance shop has a bottle of Magnaflux die scan fluid. I't put some in and apply 10 PSI or so, just to make sure....