@Parka: If you want find all hack which you've done try to use some soft called DIFF. It's made for software developers and it's for finding differences between parts of code.
Unpack oryginal PP 1.3, start diff with it and your current PP. At the end you'll get all hacks you've made.
Thanks to that it should be easy to add them to PP 1.4 (if they are necessary)
