Well this last weekend I got to take my 2004 k5 to glamis for the first time and things dident go so well. I have a fmf dez pipe, sleeved cylender, and i was runnig 91 shell gas with klotz at 40:1, oh and a top end with less than 5 hours on it. anyway on the first ride the bike started running well for the first few min, then it started to ping and knock really bad for a while, at one point my radiators boiled over and i shut the bike down. when i tried to start it back up i had no compresion, the kickstarter just went through stroke. so at this point i think i fu*ked, iam 5 miles out in the dunes, so we tried to start it for a while and nothing, so we had a rinho and tried to tow it, that sucks. we tried to start it again and it started!! the guy who got it started just started hauling ass back to camp, it made it. back at camp the bike regainged its compresion? my friends are saying the rings might have stuck or melted, also they said the pinging and knocking could be stoped by running high octane fuel, so looks like iam getting a new top end. any ideas?