I’ll come late to the party - Sea Elite is the "house" brand of Divers Supply. Their home base store is in Macon Georgia but they have shops in NC, GA, and FL. If you are not near one of their shops then you can call the Macon, GA store and make arrangements to ship your Sea Elite product to them for service. They usually have a 2-3 week turn time on the product from the time they receive it till the time you receive it back.
The BCD’s are made in the same facility as many other dive gear brands (in fact, I visited a plant in California where BCD’s and Dry Suits were being made for 8 different lines! - but I digress). Their tank manifolds are actually the prototype for most technical tank manifolds. I use one of their regulators for my Oxygen deco rig.
If there are any regulator service technicians who wish to take the Sea Elite repair clinic it can be done at the Divers Supply facility in Macon, Georgia with their lead tech.
I don’t work for Divers Supply but I have purchased about $75,000 worth of gear from them over the past ten years - both Sea Elite and international brands. I know the owner and a number of the store managers across the region. They have always strived to make it right and are all experienced divers. If you are buying online from Divers Supply then feel free to go for it. I would caution you against making any scuba gear purchase second hand. Remember, product warranties on dive gear are for the original purchaser only.