Have any of you ever had a noise issue with a Vital bowGear slider sight?

I'm shooting the Pro-slide and noticed recently when I switched bows that the head is loose where it is allowed to pivot (or slide)and this is the assumed cause of a clunk I'm hearing during the shot. (it's either this or my recently "o-ring" upgraded Drop zone rest)

I've e-mailed VGB about this and figured in the meantime I'd ask here.

If I have to I'll pull it and see if the noise goes away, but with my no-peep mounting bracket sandwiched between it and the riser I'd rather leave it on if at all possible.

Any noise issues & possible cures from other VBG users?