It could be some grit getting under the machine. Most likely it’s a bad diamond.
We will send you a new set of 5.5 ‘s.
Gonna send you some 5 inch drivers and some 5 inch diamonds as well. Let’s see if we fix it

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> On Mar 7, 2019, at 3:21 PM, csantospago@gmail.com wrote:
>
> Hi Partners,
>
> We have 2 UFO machines, one is with 4” drivers and the other is 5”.
> Have had some issues with 400 and 800 grits scratching and have to go back to 200 or 400 (after redressing the diamonds on the back of a granite tile). Unfortunately this doesn’t always work so we switch over to a makita. Then we end up buying new diamonds which gets expensive.
> This of course is a huge pain in the ass because it turns a 2-3 hour kitchen job into a  full day.
> The 5” UFO has this issue mostly.
> Has anyone else experienced this and what did you do to resolve?
> Appreciate any feedback
>
> Thank you,
> Chris Santospago
> Restoration by Design Stone
>
>
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