What is the process for copying an OEM chip. I have a rarer setup 1227747 BCC ADYS. This is an 1988 V20 Suburban LO5/SM465 combo. I would like to make a few spare/back up chips for safe keeping just in case. I have been monitoring junkyards, internet outlets for a spare, and have never seen one for sale. Also the .bins for TunerPro RT, kinda work, but gives me wonky injector duty cycles. Any info on chip cloning would be appreciated.