[Repeater-Builder] Duplexer parts

[Gary Hoff]

I have an old Phelps Dodge VHF Duplexer that has a
frozen air variable.  The Duplexer is a part# 499-509 and
covers 144-174.  The air variable in question is stamped
167-202 and is split stator about 1 3/8" square.  Anybody
know where I might find a suitable replacement, I haven't
had any luck where I've been looking.
Gary K7NEY