ZDoom

I am trying to use an animated first person perspective weapon. I got it to work. However, the placement is like deep inside the screen and quite far.
I tried playing with Scale / Offset / ZOffset and my weapon is moving around the screen, but I can't place it correctly, and I have already spent more than an hour just playing with different values, game testing, and them enhancing them further... Did not come with anything acceptable, so I hope there is a much easier way!

From my experience, that already is the easiest way - you're just going to have to mess with the numbers. I don't know that there are any model viewers or anything that use the same coordinate system, otherwise I'd say to try using those and copying the offsets from there.

Thanks! Fun times ahead of me..

I was lucky with the weapons in Gene-Tech. Most of those worked "out of the box" as far as screen position was concerned. No real need to mess around tweaking values.