Minden Tube.

I have a new to me Minden Fab trailer with Grob Speed Astir and associated trailer rigging inside. I'm interested to find out what the differences are depending on the year these were built and type of glider specific equipment they have. My trailer has a dual track ramp and single screw jack with a wide steel ground brace for the fuselage dolly. It's a little wobbly and I'm considering adding one of the leverage bar systems as discussed above. The wings have a dolly at each end. The root dolly has a pipe and attach fitting using one of the Grob twist locks and a hold down bar with wing nuts over the spar stub to secure the wing and keep it vertical. The tip dolly is a simple dual wheel dolly. The trailer has eye bolts in the floor inboard of the tips which the previous owner used to tie down the tips for transport but this tends to pull the tips in towards the fuselage tail. Do any other Minden owners have eye bolts on the outside of the wing tips that would help keep them away from the tail yet help secure the wings? Over all while using an Udo one man rigger the trailer seems to work fairly well other than having to climb inside to release the tail hold down strap.