Hard to assemble glider

Hi

I fly a older Ventus and my glider wings are difficult to slide tight to the glider for pinning.

I have a 1 pin set up and start with my left wing. I keep my brakes open and flap in 3.

I can line up the inserted arm fine and line up the controls but, once I get to a couple inches it bogs down and is quite a workout for my wing man and me.

Any tips or suggestions on making this easier? I notice that even on the same glider type and model they can vary on ease of assembly.


Dennis