Hi Derek,
I'll go along with the advice of Pete and Paul, I start my Nordie and Morini every week, but being so far away from any supplier of genuine belts would consider industrial belts as long as I can find their spec in a belt catalog. After all the belt makers are supplying far more to industry than to small bike companies, I doubt they were specially produced with a different/higher spec, as long as it's an internationally known maker I think it should be OK, Morini's are slightly different as they have no tensioner so their belt belts were made in different sizes, but if you have the middle B size industrial belts should be ok