Hi, I know it's been asked before - but the fuel tap seems to be either a terrible design, or I've got something missing? Spindly little metal rod affair with no markings? When people have answered in the past with the positions, they say 'up, down, rear' is this the open end of the bar pointing up, or the pivot end (as if there was a plastic cap with an arrow on it). I've got the open end of the bar pointing towards the rear of the bike, and it smells a bit rich. When I collected it, I think it may have been switched to reserve because there wasn't much fuel in it. 1999 Sprint 955I. Thanks!