It is an inverted blower right?
Two suggestions having used one for years.
A piece of rubber hanging where shown to catch the odd stone the auger will throw forward at you the operator.
I see attachment points for a rear blade. Buy or make one. You will love it if you clear snow in front of garage doors or parked cars.
Your back up to the door or car with the blower raised, drop the blower and its blade, pull the snow forward so there is no pile left. Raise blower back up and over the pile you just pulled forward and blow it away.
At my two brother's homes, I have remotes to raise their garage doors, I back up so the blade is just inside the garage and pull the snow forward. they never have to shovel in front of their doors.
Most blades just hang on chains. I have hydraulic cylinders on mine so I can put down pressure and scrape.
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Dave