What is the right way to mount the saite_cutter Air Assist nozzle?

What is the right way to mount the saite_cutter Air Assist nozzle?

I first fitted it the way I assumed it would go together (left hand image), but as it includes a knurled nut and the carriage itself is thicker I was getting the laser hitting far to low. So…I omitted the knurled nut, and used a rubber O-ring between the carriage and the body of the cutter head, and was able to get everything tight level and the air assist and set screw facing the direction I wanted…but I have a feeling I just installed it incorrectly first time, so did I do something wrong?

You got it. It’s the same as mine, except i used felt washers to shim it.
Make sure it’s adjusted straight down the pipe and…
Laser away and have fun,
Scott