Hi Everyone, I have been baffled by a garage door opener that I came across. It's a 1994 Fimble Paunet Co. Power Lift, and it's chain driven. The bearing around the sprocket is just about gone, so the sprocket can't grab. I'm sure I'll have to replace it, but just so everyone knows it has this brown cover and says "Power Lift" in yellow. I'm more interested in where I can get parts and where came from. Any thoughts?

Thanks