I had a 182 come in with a similar problem. It would shut down intermittently when we engaged the starter. The master relay, master switch, starter solenoid, starter, and starter switch were all replaced in that order. I eventually took another look at the master relay. Turns out we got a...
Getting a CRS to be a one-man freelance Avionics Tech isn't hard to do. Rent a T-Hangar or work with a maintenance facility to use as a base of operation and get the OpSpec to work offsite. Let the Feds know what you intend to do and they will help you through the process. I applied to be a...