Timing and highway overheating...please help
Just recently rebuilt motor...replaced crank, rods and cases(using parts from a 2004). I am 95% sure I timed it correctly. The bike starts up immediately idles and runs very well, no backfiring or popping. There maybe a slight decrease in power from before but it may just be my imagination as it's been 2 years since it ran. After riding 15 min especially on the highway the bike overheats.
I did everything to rework the cooling system. New radiator cap, new thermostat, distilled water w/ water wetter and bled the coolant system of all air bubbles. Also wired the radiator fan to run continuously. Bike still over heats. Then I pulled the new plugs that I had installed, all 4 are white....the bike is running lean on both cylinders.
The carbs are exactly the same as they were before the bike blew up. Same mixture screw settings, same jet kit, every thing exactly the same as before and the bike never ran lean. The carbs just sat for 2 years drained of gas off the bike in a box in my garage. So I am 99.9% its not a carb problem.
Can I be 1 tooth off on timing the cams on both cylinders retarding or advancing the timing causing the bike to run as described above(good with a loss of a little power and severely lean overheating the bike).
Would any amount of being off on the timing cause the bike to run terrible or not all.
Please help this is driving me crazy I put a lot of money and time into rebuilding this motor. The bike runs really good it's just running extremely lean and overheating.