@solarplug - thank you for the comments, as they were most helpful. We too are most pleased with the Electron platform and one of our main focus is to harden the platform for environmental/EMI concerns.
@BDub - in looking at the github repository, I am not sure if the data sheets for all of the connectors are from Kaweei. It would be useful to have the Kaweei specs available (SIM, JST - male and female, 1x18 header, uFL) so that things like contact resistance, material, plating thickness, etc would be known. Could you please advise?
Thanks