Jean-Luc Pickguard

No, this is very different to the hercules issue where the rubbery bit is a thick moulding. The rubbery bit on the Rumble knobs is an extremely thin layer over the hard plastic knobs - like it was painted or sprayed on. Soaking in surgical spirit and giving it a scrub took all of the rubbery layer off. My Fender Mustang GTX guitar amp doesn't have rubbery knobs, so I don't think there's anything lost in not having that layer on the rumble. I bought the amp secondhand, so I doubt fender would have offered any help in my case.

Blummin' 'eck! That sounds like a bit of a palaver — I just have the SY-1 between my tuner & (always on) compresser on my board and kick it in for that song - it has level controls to mix the synth in with the bass.

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I owned a C9 for about a week but sold it on as it didn't trigger well for me. I've tried several pedals to get an organ sound from my bass, however the only one that has worked well enough to earn a place on my pedalboard is the Boss SY-1. Here's a video where I'm doubling the bass line from my black JMJ Mustang bass with organ from the SY-1. The SY-1 has a little switch on the back to switch it between guitar or bass.

The tuner placement is a dead givaway. Jens Ritter is MDP's alter ego.

Excellent! glad it worked for you Martin

Late for Work - Darts

I did consider acetone but didn't want to risk it eating anything more than the rubbery coating. The other thing I had lined up to try if the surgical spirit didn't work was lighter fluid.

Looks like a good start for a relic project

When I go my Fender Rumble 40 home after buying it secondhand, the first thing I noticed was that the knobs were unpleasantly sticky which did not creat a great first impression of an otherwise great amp. I decided that my microcube better fits my needs for a practice amp, so the rumble is now on reverb. I really don't want the new owner to feel ookie every time they adjust the settings so the stickyness had to go. I appears that the cream knobs on the amp were given a rubberised coating which has broken down causing the stickyness. I thought about trying acetone (nail polish remover) to get this off, but was concerned that this might attact the actual plastic of the knob. I figured that surgical spirit might work so bought a small bottle (£2.19 from superdrug). Wearing latex gloves, I soaked the knobs in a ramekin filled with surgical spirit for 10 minutes, then scrubbed each one with a spare toothbrush and rubbed the surface with kitchen towel. The result is that all of the sticky rubbery gunk has now gone, the knobs are no longer sticky, and importantly this hasn't changed the appearance of the knobs.

Pope Song - Tim Minchin

Welcome to the JMJ clan! I have a black JMJ & a pair of daphne blues. I'm not sure why I bought the second blue one though. I've tried the LaBella mustang set on my vintera mustang, but D'addario ECB81M hromes are my favourite strings on the JMJs.

Jelly Jack - The Residents

Please Don't Touch - Motorhead & Girlschool

The photos give no useful information. If the relief appears to be set correctly and it still seems wrong, I would take it to a trusted luthier and ask for a diagnosis. In my case that would probably be Martin or John at the Gallery in Camden.

My Word You Do Look Queer — Rolf Harris

Hard Pushing Papa — Blind Blake

Champagne & Reefer - Muddy Waters

I'm Walking Behind You — Sam Cooke

Spooky - Dusty Springfield

Give Him A Great Big Kiss — The Shangri-La's

The Day I Found A Fiver - The Motors

Boom Tish!