Hi, i'm quite outraged. The jack for the instrument cable on my Carvin LB75 is dead. I bought the bass brand new and only had it for 20 years. And in these 20 years, i even had it sitting in the closet for 3 years while i took a break from playing the bass. So my problem is the following: The jack itself looks like nothing i have seen around. Not your standard'ish stereo plug. The German distributor for Carvin is not the same as it was in 1996 when i bought it and the new guys refuse to help me because they did not sell the bass. What can i do? Can i use the standard stereo jack instead?