Mr Bedell and others,
Thanks again. Last week I things up and jacked my 129 up to have a good look at things. I was able to tighten up that VERY small collar that creates friction on the speed control lever shaft. That was a big improvement. While in there, I replaced a very worn ball end on the steering linkage. Its steering has always been very sloppy during my ownership (about 1/5 of a steering wheel turn of play), and I can see about seven small reasons for this. I was quickly able to improve about four of them, and that's good enough for me right now! The improvement is quite noticeable. I still do many speed adjustments depending on the hills, but at least it does not wander back to Neutral
Thanks Again. -Christopher