I have a 78 Intruder,new seals,gaskets ,carb boots,ETC.135 psi on both cylinders.When I start it cold the mag side doesn't seem to suck any gas and runs only on the clutch side.I put my hand over the carb completely for just an instant and it picks it up and runs perfect.It will start fine after that.Also I had to replace the mag seal over the summer with only a couple hundred miles on it.The seal was actually stuck to the crank when I tore it down.Any ideas why it went so quick,I have had the Intruder for 20 years and last year was the first time I changed the seals.Thanks.