I recently purchased a 2000 one owner 1200 Bandit with 1400 miles, the bike looks brand new. It keeps stalling, the fuel, vacuum lines and petcock have been replaced.Gas cap vent cleaned. It seems to take a long time to warm up & it struggles to get to 4000 rpms with full choke. It ran great for 4 days & over 125 miles after the gas cap vent was cleaned. But on my way home it stalled while doing 60 mph. It took a while to get it started but it ran great when it did. Please help I love this bike when it's running