Lots of questions need to be answered for anyone to really give you the correct answer.
Did you have the same areas on your car each day?
Were you overallowed or scratch each day?
What was the sporh each day?
Did the sup help you in any fashion?Opening doors, helping carry pakages to doors, etc.?
Was you total milage the same each day?
Was the truck loaded stop for stop each day?
Were you scratch on the ride days but way over on the days by yourself?
Most rides create a picture of a drivers habits. If your numbers were in line with your performance on a regular basis then you don't have a problem. If you were running and gunning all day while with the supervisor then you have a problem. If, however, you delivered at the same pace as you use when you are on road by yourself then I can't understand how you could have a problem. Most rides will show the company if you are working the same way by yourself as you do when with a sup on an OJS ride. They know that they can never get rid of a driver based solely on OJS numbers. Why, you may ask? Because they know every day is different. Stops with signatures, COD's collected, number of pieces delivered and picked up, total miles driven, etc. change on a daily basis. These things also change your SPORH on a daily basis. What they can expect from you is to do the best you can on a daily basis, and contractually give a fair days work for a fair days pay. Do your best everyday and they don't have much to complain about. This tactic, OJS rides after 9.5 grievances are filed, is just that, a tactic, to try and scare you off filing these grievances. Don't let them scare you into not asking them to complay with the contract. Do your best every day and continue to seek relieve from the 9.5 days. If you are doing your best every day your numbers shouldn't be much different from your numbers during the ride. If they are you need to ask yourself why or what you did different. The suggestion above to speek with your preloader is a valid suggestion. The on car sups have also been know to go on your car after the preload raps and straighten out your load. Find out if this may have happened. Do follow the suggestion of speaking with your steward and file the grievance for harrassment, if that's what you think they are doing. I've never heard of asking to have your sup show you how to do your route, but it sounds like an interesting idea. I'm not sure a sup, with limited knowledge of your area, as opposed to a driver that's been on a route for a while could possibly reach the same numbers as the driver, unless he runs his nuts of all day, which wouldn't be a good barrometer of your daily performance. I would be interested to see if he/she could achieve your numbers.
Has your numbers on route been the same now as when you had the sup on car, if not, what's different now.
Good luck.