Thanks guys, threading in the latest version 3.042 032 is working great on my lathe, i had to convert back to index and a single slot
i have only tested it on a thread 35mm long and looking on a OGP CNC scope the pitch is only off by 0.008
for most applications thats fine.
I also did quite a bit of running between home and my friends house whom has Mastercam 9 and i managed to get the post sorted to post G76 code in Mach format
Feed back welcome
In the post it asks some info for the program header, the defaults can be changed in the post, from line 706 and onwards, using notepad or any text editor
Friedrich
Update: Repaired C value that wasn't working all the time