Its been a while since I looked at it but as far as I know Pinball Arcade support is working. PinballX does not send any mouse clicks as far a I remember, just key strokes. It sounds like you are trying to do your own thing, but why? Or a video may speak a thousand words here.
You will need to post the ini, log and database xml file.
I think freecammod supports direct launching by command line too?