Hey guys, I recently attempted a valve adjustment on my bike. I also changed spark plugs while i was at it. now the bike will start, but not without some throttle to get it going, and it does idle very rough. I am also getting a backfire out of the left exhaust pipe which leads to the front cylinder. I have gone through and quadruple checked my cam timing and all four are correct, everything seems to be seated properly and valve clearances are now where they should be according to the manual. i went back and changed to my old spark plugs too just in case but it didn't make any difference.