1981 GL1100 needs choke on to idle

imported post

Thanks to evryone for the help with getting my bike through the "seafoam in the carburetors" problem. It now starts right up. On to the next issue. Once started the bike will eventually idle at a stop at ~1000 - 1200 with the choke not engaged. Once I am riding if I come to stop or slow down to a near stop the bike will stall - unless I engage the choke 1/3 to 1/2. With the choke engaged it will idle - although sometimes at very high revs (~3000) until I adjust the choke. If I use the throttle at all at a stop with the choke engaged the engine will race at those same high revs. Once I am moving the bike runs withiut stalling. I've been trying to research this on this site and wonder if it is vacuum lines? I'd appreciate any thoughts or suggestions on what to check and how to check it. Also, can anyone suggest a good GL1100 mechanics manual? Thanks for the help.