Used the gun today, got some very neat welds which is a first! The feed is smooooth and consistent, not jumpy like the other chinese one. Tried with 0.8mm gasless and 0.6mm 308L, no adjustment needed on the rollers they are perfect.
My machine can not drive this motor nearly as fast, so for 0.6mm wire it was maxed out and not really enough, but thats a problem on the machine, not the gun.
Drilled a hole for air hose, made spool spacer and a bit of sheet so it turns correctly. Put the diffuser tube in lathe to make shiny.. tomorrow I need to make a proper air connector. I cut the case in two so I can easily get at the rollers.