I installed my new Clarke 4.7 and while it was apart I replaced the clutch cable and installed a new plug. Now the bike wont idle. When riding it wants to die between shifts. The plug is gapped correctly and is the same as the one it replaced. I needed to shorten the fuel line 1/2 inch to ensure smooth flow. It seems like the petcock is at a very very oh so very slight upward angle and the fuel line is pretty much flat going to the carb. I tried doubling up on the foam under the front of the tank in order to tilt the tank backward slightly but I cant tell if it worked or not. I turned the big finger screw up in order to get it to stay running. How'd it go when you all did yours?