Hi y'all. I am posting hoping that someone out there can help. We had a barn fire last October and our 6 foot snowblower was pretty damaged. This was given to us to use so we are not even sure what brand/type it is. We have a friend who is a master welder and offered to help us spruce it up if we could to give back to the owner- heres the problem. Husband says we need to replace the gearbox. We have no idea how to find one or who even sells them etc. Any ideas? Without much knowledge of the model etc. we are really at a standstill. If we can measure it etc. would that help us? Is there such a place (even online) where we can purchase a new gearbox? Any suggestions or help is greatly appreciated. We used this and it was used when we got is so really hesitate to use our insurance money to buy this guy a new one if we can fix the old one. Are gear boxes costly?