I have some questions about your company's 315 fixture. Why are you using mogul sockets with pgzx adapters instead of the correct socket? And why are you mounting the lamp horizontally when it's physical characteristics make it perform much better vertically? Do you not realize how asymmetrical the footprint is from that configuration?
These are made and sold by the designer of Welthink ballasts, correct? Can you also please confirm whether the ballast cord length is limited to 6ft like the Philips ballast?