YUP,
Hey I use the synthetic coated ones, I hate hearing the old style marbles
rattling as fuel sloshes in tank.
I hear other's like the rattle, they cover up those annoying grinding
engine noises when idling.

Regards,
Ron

"Doug Kanter" ...
Yeah. That gets mixed into the gasoline, right? Along with the marbles to
keep the gas from turning to gel at temps below 65 F?

"networkin"
I've heard of this odd behavior at the transom. I read in a manual
something
about changing your prop wash.