The wheel retainer is friction fit print it flat side and 90 angles down. Chamfer the inside edges with your de-burring tool so that the part wedges into the body.
Hose end is 11.5 threads per inch North America standard. The original one printed 14 threads per inch and possibly some of the leaking issues mentioned on the forum. Also, if you are brave, CA glue the hose end to the body - that should also help with leaking. Careful not to get glue in your eyes~! For me I use the safety squint method - better to use safety glasses.
thanks again Jack~! hope this finds you well!!!
The author remixed this model.
Added wheel retainer to hold front wheel caster in place.
Hose end modified for 11.5 threads per inch North America standard.