I own a mobile gym upholstery business and we use Maestri ME80 electric staple guns. I've bought a dozen over the years. They used to last 6-8 years. Now, I barely get a year out of them. I have 5 broken ones sitting in a closet. Does anyone know of a company I can send them to to be repaired? I've tried doing the repairs myself with no luck. I contacted Maestri and they weren't able to help.