Parametric astro spacer

I have been wanting to make some spacers to allow me to use my m42 pentax lenses on my filterwheel and ZWO asi 120 mm camera and found this great thing but I struggled to change the thread depth to allow for my lens without altering the overall length of the spacer so I have made some changes to make more adjustable.

Added:
male thread depth
female thread depth
step (optional i had a plate on my filter wheel to mount a motor this is to clear that plate)

Changed:
insert module to adjust