[R-390] R390-A 4kc filter needed

[Peter Worrall, G4GJL]

I am renovating / rebuilding a St Juliens Creek set for my friend,
Graham,G3XTZ.

 I have found  that the 4kc mechanical filter is faulty (and beyond
repair...I have had some success in the past, opening and re-soldering the
fine wires on the actuator coils).

Does anyone have a spare they would sell / swap.

Pete
G4GJL