Thats great! I am have difficulty setting mine to suit lowest tractor speed...
How many sods is your machine and how many teeth are on the first sprocket after gearbox. The one i have has had a replacement sprocket put in there but i have a feeling that it is a different size to what it was day one.
Only seen this now. Will have a look, it’s shared with a relative and at his. Easily 20 years since it was last used so not sure what condition it’s in now.