Yeah, that's what I did. I had a million candlepower battery powered search light position perfectly behind the prop, with me doing the checking in front. No dice. That HAS to be a good enough condition for it. I even painted the prop.

I also tried it at all kinds of angles in the bright sunlight to no avail either. This tach is bum! Glo Bee agrees, so back it goes...

Thanks,
AV8TOR