They say attitude is everything and I have to agree, especially when you need help.
Seems like you're in Seven Springs. Your best locations are going to be in Raleigh, so you may have to take the drive if it's worth it to you. I found more sign suppliers in Goldsboro and Kinston more than heat press vinyl suppliers.
There is a company in Kinston, not very far from you, called Right-On Signs. They do signage, screenprinting and other services with a nice looking shop. They do not appear as a supplier, but may be - call them and start networking. I'm certain they are using equipment & sign supplies that you want to see, so I suggest asking for a tour.
Right-On Signs
This is a little about their facility:
'A 2800 sq. ft. facility which houses 5 computers, 3 vinyl cutters (30 in, 48 in & 54 in), 1 Gerber edge II, a complete screen printing system, a sandblasting room, 54 wide format inkjet printer and a ShopBot 5x8' CNC Router table.'
Good luck!