Thanks for your reply!
Some further clarification please....
The first time, when I started the mower the left side would begin to creep backwards. I adjusted the "manufacturers" linkage and it stopped creeping back to the left.
It's started creeping back to the left again. How can I know if I should adjust the "manufacturers" linkage or the transmission linkage?" Which should I start with? Should I start with one or the other based on the symptom?
Thanks in advance!
Dave