stovebold -- Thanks for the info ... they're really cool lookin' gizmos, man. HA! I like your crack about a rocket launcher!
joker -- Yeah ... I don't think one would work with my truck -- a totally-original stovebolt, yes! Thanks, Fred ... I love my truck, too, but even more when people compliment it like you do.
fab51 -- Thanks for the pics! Mine are adjustable, like yours ... but a different design at the shaft -- mine have a lock-screw.