gr8flyer55

If you want a different curve as I said in other posts here, Nyemi will even write it for you. He has offered twice. I think that is enough. There is no specific program to change the curves. It is written in ASM and requires that you input data to the excel worksheet then copy and paste the retlw values into the source code to make a new hex file by using the MPLAB ASM compiler.
Are willing to do this? If you are able to do this, I will email you the source code. .. If not, then you are stuck with the free hex file.