Some Speedo troubles

["K Creason" <dmc4687@xxxx>]

Last week my lower speedo cable broke. I researched my symptoms through the archives and was pretty sure it was the lower speedo cable (which it was) and ordered one from Houston. My research also brought up a message of someone stating that the cable guide sometimes broke or rusted easily and this would put strain on the cable causing it to break. So I ordered one of those guides, too.
The new cable is about a foot shorter than the broken one. My broken cable snaked through the cabin wall and was zip tied close to the frame. This was quite a lot of bends and probably helped contribute to the breakage. Maybe. That's beside the point.
My original cable guide was the simple kind that had a plastic swivel latch instead of the long wire arm. It was working, though I'm not sure it would be enough since this new cable isn't tied off anywhere else. So it's probably good that I replaced it.
While I had the cable off I shot some lithium aerosol grease into the angle drive. I read that you are suppossed to turn the angle drive and remove the bottom screw and lube it through the screw hole, but I couldn't figure out how to turn it, and was afraid to put a pipe wrench on it. #Q1: Info anyone?
So... the new guide is installed, the new cable is installed and it worked great for the rest of the week until this morning. After gassing up I went down a steep drive to the road, and by the time I got passed the next light my speedo is making an awful racket. The needle is moving quite smooth, there isn't a lot of jumping around even from 5-30, which is an improvement over the last cable. But this racket has me a little scared.
I pulled over and check the angle of the cable from the angle drive, it looks good. I gave the arm a little more of a bend to help some, but I'm not sure what it is. The noise really sounds like it's coming from the lambda counter box ( #Q2: that the box in the footwell, right?), but that could just be the place where the sound most echoes.
#Q3: Suggestions anyone?
#Q4: Can some one post some pictures of a good speedo cable routing job?

K. Creason
#4687: 22,409 miles
5sp, grey