My old early 80s Yamaha bass that I use on a lot of recording sessions had developed a strange rattle...I thought it might have been a loose truss rod, a bit of googling revealed that the problem was likely to be the machine heads. I somehow found myself on the Jenz tuners website
I was impressed by what I read, so ordered a set & installed them. They are beautifully engineered - and they solved the problem!
Delivery to Brisbane from the USA took 10 days. The designer, Jim Donahue, contacted me personally to apologise for slow delivery (he had been attending the NAMM show when I placed the order), and sent me a second set, which I'll install on my old fretless bass.
Incredible product & incredible service! I highly recommend Jenz tuners.