Following is the instructions that my friend Steve, N9HE, gave me. He just
installed the chip/board in his 590. I hope this helps:
Remove the bottom cover then remove the shield cover. There are 5 rubber
cushions in the VGS-1 package. Use the 2 rubber cushions sized 20x30x2mm
and 21x21x2.5mm. Attach the larger pad on top of the VGS-1 and the smaller
pad on the bottom of the VGS-1. The remaining cushions are not used. Plug
in the VGS-1 and replace the shield cover then replace bottom cover.
73
KD7GC
Alan R. Downing
Phoenix, AZ