Have been perusing this site and others regarding the air duct hose (ridged hose like vacuum cleaner hose) coming from the front fairing and extending back to the area of the airbox. Depending on year, the STs seem to come with single air ducts on either the right or left side, air duct hoses on both sides, or no air duct hoses. My '93 has one on the left. I'm reassembling the bike after a carb rebuild and can't remember where the aft end of this hose attaches, if anywhere. Can anyone help?