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some questions
You can use your nexguider with your OAG and this will bring your weight down. It might be harder to get visual stars but in the long term will be a lighter set up. Failing that you can use a modded finder scope or your 80mm guide scope.
The usual published max weight of a mount as far as I am aware, doesn't include the counter weights.
Make sure it is balanced well, add some counterweights if needed. I have used weight lifting weights sandwhiched between the official' counterweights on an EQ 6 and a cgem - they are cheap from Big W and come in various weights.
Usually if you add the camera, guidescope etc it weighes the top end of the scope down, so move the primary mirror end backwards on the saddle to try and balance it in that axis, also balance with the weights in the other axis.
You can also mount the guide scope along the main tube's rings so the weight is distrubuted in the middle not at the ends- can get a mounting plate which you can bolt onto the big tube rings then add small tube rings.
If the mount moves ok after this and guides well, then it's not overloaded!!
Cheers
Graham
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