today don - routnabout - came down and helped me install my 4g board. VERY HAPPY SO FAR WITH RESULTS.

smooth, clean and fast, wow!

also we put a 2x3 .25 steel tubing riser block on the carriage on each side.
awesome.
pics to come tomorrow.

thank you don for the help.
he just said don't worry about it ( he's sitting next to me)