I can't count how many times I read about people getting scratches on their freshly paint rim after mounting new tire, those V61 are a real PITA, I try to mount them and give up.
A old local service garage did it for a very fair price so like Tim I suggest you find a old service garage who use to do bias, tractor and truck tires, if this doesn't work for you find a place who do ATV tires, they charge premium but those guys deal frequently with small off road mag wheels and don't scratch them...
Sorry for your rim.
