Thanks chaps.
It's a bit late to start treating the bass with care.
It's been mistreated all it's life, including being set on fire and thrown off stage regularly by it's first owner.
It was rebuilt in 1978 with a new fingerboard and body because the originals were so badly scorched.
It is very battered and I've never taken great care of it in the 34 years I've had it.
The pick ups are the loudest and deepest sounding of any passive bass I've played, including other pre CBS Fenders.
Over the past few years I've bought a lot of Jazz basses, but none of them come close to the depth of tone and volume of this bass.
Many of them have developed faults quite quickly, like dodgy output jacks, while my old faithfull with it's original '63 electrics has never missed a beat.
It's in an ugly, heavy old beast, but still by far my favourite bass and I hope it continues to be as reliable for the next 34 years.