Good news. I think I have it sorted out.
Thanks everyone for their words of wisdom.
So, I took mount apart today and took the ring gear drum completely off.
It’s the only thing I didn’t remove as it was quite tight when it got halfway off.
Hit the friction surfaces with wet and dry, give a good grease and put it back together.
Spent a bit of time with the worm adjustments as well. Happy to say it runs and sounds like new. And more importantly the nasty dec spikes have disappeared. One other thing of note I did was to run the guide cam off the USB2 port and the dslr into the usb3 port. I had them in each of the usb3 ports previously.
Happy nights.
Polar alignment still needs work as it was working a bt much with corrections to south.
Anyways, main issue sorted.
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