Sometimes when I kick my bike over after I have turned it off with the kill switch, it will have no compression for 5-10 kicks, and I mean no compression, like it was a really tired 125 with old rings in it. I try to find the compression stroke, but it nevers builds any compression. I think that a valve might be sticking open?? I experienced the same problem on my 04. Has anyone else ever had this happen??? I will kick it 5-10 times with no compression and sometimes it will build compression after a number of kicks, other times I give it just a little gas and it fires right up. This happens only on rare occasion, maybe every other ride. When I put my bike back on the stand I make sure to find the compression stroke so that all of the valves are closed. Any ideas????