1/87th Spudnik 1250 type telescoping conveyor

This is my version of a Spudnik 1250 conveyor that telescopes out to cover 90 feet. The bottom conveyor slips into the sides of the upper conveyor. The lower pulls outwards. There are three wheelsets....two, the large tire rear, and the small tire front, have brackets that slip up and down and can be pinned in place. The third set of wheel simply floats in place. Pins are not included, as they should be stronger material like brass, styrene, nail etc. Questions? modelmechanic@gmail.com