ATM Equatorial platform

["Bodor, Murray" <bodor.murray@aquila.com>]

Hello ATMers

Newbie here...

I am attempting to build an equatorial platform for my 8" homemade
truss-tube dob. I am basing my design on Chuck Shaw's excellent article, as
well as the designs on Jan van Gastel's site.

I have encountered a design problem: the azimuth/ground board pivot point is
not in line vertically with the scope's optical/altitude CG. It's my first
homebuilt attempt, what can I say :)

Some dimensions: 
My latitude = 51.1 deg
CG = 16.75" above platform. 
Rocker box = 24" long (azimuth bearing at 12"). 
Altitude bearing centers = 8.5" from front of rocker box

=> Altitude/azimuth bearing offset = 3.5"

So, rotating my scope through azimuth looks like it will move the CG away
from the polar axis...what will this do to the way the scope tracks? Or is
this even going to work? Should I just give up now and move the azimuth
pivot on my scope?

Any advice is much appreciated.

M.