Now that the pre glued groups are cured it is time to join the rest.
Keep fully intact on flat table.
Start by joining
3 to right-angle to T to group 5 on all sides.
6 to central mount fitting.
Same thing for lower quadrant and join to central mount. Make sure it is all straight.
Align 2+ 4 with dowel+ wheels
Start with 2 then 4 and your done son!!!