Regarding D6G, I’m stoked to take the service course and entirely confident they’d help me six time zones away over a satellite phone.
IIR, you did a tech course with @LandonL. That being the case, you already know you'll be getting great instruction. My buddy and I recently took the course from him. He was patient and thorough and the class was just fun! Chris showed up on the last day of the class and he added some additional insight into regulator design. Given the quality of instruction we got, it felt like a serious bargain!