Quoted from Chalkey:That's it! Do iiiit! I pm'd the guy about a year ago and he sold me a kit. If he doesn't do it anymore he shows you how to make it in the thread IIRC .
Great!! I actually just did it. Just took two 4.7 kOhm resistors and soldered directly over (parallel) the existing R106 and R110 resistors. Quick and dirty. It doesn't let me adjust anything, but it improved the speaker noise quite a bit. Awesome...
Now if only i could get rid of my transformes noise in the machine as well. Seems that is a lot harder as i already tried the "bash it wit a hammer"-approach, tightening it to the cabinet and tightening the bolts that goes thru the transformer it self. But still no luck