I spoke with the painter Yesterday,, and he said he would use any product that I chose,, I ask him which product he had the most experance with and was most comfortable with,, S/W,, and if he prefered to use S/W, he answered yes,, so I think we will go with S/W, the shop he works at has all the mixing equipment, , Thank you for answering the SPI question,, I understand Barry's position,, I intend to use SPI for the primer and prep stage,,,, Thanks for the great professional advice,, Bill