Noob offset question

[HalfDoor]

Hello.

I'm having a problem reading the original chip. I keeps saying check sum incorrect. I click ignore and then it reads. But, when I make adjustments to the code and reburn, it isn't right.

I have a BDJR 16168625 out of a '94 GMC w 4L80E ($0E mask). What would the original chip be and what of the offset?

I'm using: Willem True burner, software that came with the burner (Read and Burn chip), TunerPro RT (make adjustments and tune the code), memcal adapter (read/burn) and Moate's Header (H1) so soldering chip isnt neccessary.

If anyone could tell me what the original chip is and the offset so I can get a good read/burn would be MUCH appreciated!

Thanks!
HD