Hey guys, found a broken belt on my dentist chair I use in the office. I need to know how to buy the correct belt to replace it. Which measurements are the ones I need? Also are these things rated for stress? It mates to the big electric motor to lift clients up, and some of them will not be easy lifts. Any help would be great. It's old, no part number interchange that I can find and chair company name is M.I.A.