iATKOS Inside: Attempting my first OCLP patch on both 2012 Macs for costumers. I charged them $600 mxn ($30 usd) for the work on each one. Wish me luck. Going with Monterrey. Any advice?

Attempting my first OCLP patch on both 2012 Macs for costumers. I charged them $600 mxn ($30 usd) for the work on each one. Wish me luck. Going with Monterrey. Any advice?