Had the same malady - took the seat off and just sit on top of the Helmholtz Resonator , the snorkel vacuums away excess moisture for a comfortable ride . Checked the plugs and the porcelain was greenish.

2005 Model . Two Fast Eddy stickers , a bell and a clock . She's Lola . She tinkles and keeps time . http://s649.photobucket.com/albums/uu211/britbike05/