there is a slight nock sound on bottom end,i had this on a cr250 ounce,same sound,thourght it was crank but wasnt, also ive noticed as you sit on bike,the left exhaust has slight smoke,but right doesnt,could the nock be related to fuel,if i do need a crank/rebuild what is the best route to go,i have spoke to the guy in greece and he can get mains,the shop said bigends were good, _________________
NSR250 MC18