We HDs have large love tanks. The filler cap is off and we're ready and waiting for some juice. When a little comes in we start up and run like a dream but wait, there's a hole in the tank and it's all drained out again. Our LDs have tiny empty love tanks with a locking filler cap. It's one of those locks that use a different key to the ignition and we've only got the ignition key. Trouble is, the ignition key can't get the LD motor running when the tank's dry.

Just a musing...
SD