



Incorrect opener sprocket
So had my garage door opener sprocket sheer off so I ordered a whole new kit from Chamberlain. But it appears I now have a different sprocket and seems like I need to change my belt too. When I ordered the kit, I didn’t realize they’d be options for different sprockets, yes, this opener is pretty old! Any tips on what belt I need how long, seems like I need less teeth per inch or something like that