Hi Rob, My sprocket is on the right, looking from the front....as are all cylinder mowers as far as I know.
Re: checking with the straight edge, the machine is laid straight back to the ground, resting on it's handlebars, to expose the rear roller, bedknife assembly and front roller. Rob,
caution here, as with a petrol engine, the oil will run in areas it's not supposed to....this procedure is best carried out during an oil change, so the oil is not a problem.
This issue seems to be really getting technical, when it should be a relatively easy (once practised) job to do.
Here are my thoughts:
Alroh is a very well made Australian mower that is very strong in construction. I very much doubt that the frame is twisted.
It was owned by a member of your family and, from what you have said, other than exposure to a little salt air, most probably treated very well.
The tech that did the grind for you is a professional; and the lathe would be set up to accept reels correctly and ground in the right direction.
As the tech did the grind, he is the person most qualified to address the issues that you are having.
Without us being physically able to see the machine, it is almost impossible to correctly diagnose your problem.
A bit like going to the Doctor, over the phone!
I know that you are anxious to get your dwarf lawn mowed, and advice from your tech would be my best advice.
