You could pull the permit under your own name, that'll relieve the contractor of any worries over an open permit in his name languishing while awaiting final inspections. As to doing your own demo, the concern there could be that if he blocks out his schedule to start the work and you don't have the demo complete, he'll be twiddling his thumbs waiting for you to finish. I'd recommend setting up an appointment with him for him to see the bathroom a couple of days before he is to start his portion of the work. If this is not your only bathroom, you could do the demo early, have everything broom clean, then he can come by a couple of days before he is to start to inspect your work. He can then give you an "everything's fine" or he might give you a couple of more tasks to do. It can also be an advantage to him as well, because the early visit will prevent any surprises when he shows up to start work. Budgets are not unlimited, I understand your position. But I also see his point, in that this project will sort of have his name on it, yet it's up to you to properly finish the detail work for a project that he started. Still, it's your house. It's your money. He can chose to work within the scope of work offered, or you can find someone else.

I agree with genes, you may need some drivers for the usb to be recognized. I have had that same problem many times. Usually you want to make sure you install the chipset drivers first then everything after. Look at your device manager to see what needs to have drivers installed. You can find that by right clicking the my computer icon and going to properties. Go to the hardware tab and click on device manager. Anything with a yellow exclamation point next to it will need to have drivers installed. After you get them all installed, get all of your windows updates and make sure to get a virus program on there so you don't need to do this again right away

Diodes are meant to allow the flow of electricity in one direction and block it in the other it might be possible that if it was installed wrong that the doorbell got fried. Just a possibility

"After some discussion, it got escalated to someone else, who said there is another broil element in the oven. I asked the serviceperson if he would please verify that this secondary broil element is turning on" I believe this is incorrect. Look at the parts diagram. In the Oven Parts diagram you see part #25 (bake burner at bottom of oven) and part #26 (broiler burner at top of oven). The Internal Parts diagram shows part #11 (heat element at rear of oven). The heat element is electric and its heat is circulated by the convection fan. So I think the burners and elements operate this way: Bake (bake burner only) Broil (broil burner only) Convection bake (bake burner and heat element) Convection roast (bake burner, broiler burner, and heat element) -- amateur