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!