8 axle flat car in N scale

This is an 8 axle flat car based on the QTTX 130556; http://www.solrswat.ca/1_EquipmentRoster/Freight/TTX_QTTX_Flats/8_axle_FD/QTTX130550-130556.htm
This heavy duty, drop deck flat car is used for very heavy, tall loads, often transformers or machinery.
You will need 4 n scale intermountain trucks and a pair of brake wheels to complete this build.
Build 1 deck, 2 bolsters and 4 pins. The pins will be used for the trucks. You can use 1.75mm filament to pin the bolsters to the deck.
Note that