I have two Genie 1/2 HP garage door openers. I needed two carts for two insulated and heavy garage doors, but I bought one to test the construction and similarity between old and new before investing in another. The former original factory units lasted 22 years and both fell into disrepair at about the same time. Upon closer inspection, the knots were nearly identical. The case is strong, the gearbox looks mighty. As you can see, the new block had a shorter horizontal part on one side. The…