R BO
You had a lot of excess weight there- glass & doors for sure add at least 200-300 pounds. I like 49chevyman's 2x6 inside opposed to your steel, less likely to slide as metal on metal will.

I am almost to the removial point and your experiance helps make everybody safer. THANK YOU for posting. The best part is you did not get hurt.

What do you think about large rachet straps, I have some rated at 5K to hook to the hoist? Bulk of weight on the beam and straps to reduce nose tilt?

Brad