Autostar should correct in DEC. I have successfully autoguided with AutostarSuite and a DSI. But it is not easy, and you are very limited.
But actually you should not need to do any DEC adjustments if you are acurately polar aligned, as DEC adjustmest => field rotation drift.
Spend time to get acurately polar aligned using the Drift method, so you don't need DEC corrections when autoguiding. Your images will love you for it !!
Cheers
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