Why don't you just learn the Mazatrol? Should only take about a day to learn the basics. 3 at the most. This is a way to help you break out of your bubble. Just bite the bullet and do it. I never "wanted" to learn Anilam, Bandit, Centroid, Fagor, ServoII etc. But I know the more I know, the more experience I have, the more valuable I am.
I would not rely on drip feeding unless your machine memory is smaller than your programs.
Ask for MasterCam post processors in the MasterCam forum or on eMasterCam. If no one has one to share, ask for help modifying a current post processor to output the needed code. This sort of implies, you have to have good working samples of code or you have to learn how to write good code for the Mazaks.
There is no such thing as "plain G-code". Some of the basics work in nearly all machines, G00, G01, G02, G03, etc. Where you really get crossed up is with M-codes (miscellaneous/machine function codes) and canned cycles.