Hi.....thanks very much for your prompt reply.
image p6300010 is the mobo in position ready to secure.....note the i/o back plate (mis)alignment in image 05
When I align the i/o connectors to the i/o plate, it lifts the mobo 1½cms off the mobo tray at the left of image 10, while the right of the image shows the mobo flat on the mounting tray. I am assuming that I need to lift the right side of the mobo 1½cm so it sits level....if this is the case, what should I use to level it.
I have searched every inch of Gigabyte & Thermaltake websites & forums, but can find no other reference to this problem
thanks for the info