I made it to 13,500 miles on my '07 before I noticed oil leaking down onto the transmission. I also was having "blowby" just recently with oil dripping from my A/C onto the exhaust pipe. Just got it out of the shop yesterday. They replaced the rear cylinder, gaskets, and rings. Dealer said "blowby" should go away now that new rings have been placed. They said my front cylinder was ok. My heated hand grips crapped out also. They replaced the left handgrip only? They heat up now but they sure don't get very warm, even on high--but then again they never did. Everything was covered under warranty. My invoice shows $325 in parts and $220 in labor(3.4 hours) to fix the rear cylinder leak ($545 total). Then it was another $357 to fix the heated handgrips- $240 parts and $117 labor (1.80 hours). They told me they used a "wet" technique to place the gasket, which they said means they used a copper colored liquid paste sealer which hardens ( looked like permatex to me) when they replaced the gasket.
There was another biker picking up his '07 Black/orange jester when I dropped mine off last Monday, and he said his rear cylinder oil leak had just been fixed for the third time. I guess we will see what happens. My warranty runs out this August. The additional 5 year extended warranty ( 7 yr total w/ factory warranty) is $1494 plus a $150 surcharge since I didn't buy it within the first 30 days of new bike purchase. I am seriously considering the extended warranty since I plan on keeping this bike for a few years.