Slight Wobble in Viper TQS Throttle

[mArTiNkOpAc]

I have had my Viper TQS mission pack for about half a year and I am very happy with it. However one minor detail that slightly bothers me is that the throttle has a small amount of play in it's range of travel. This happens when releasing the throttle, the grip tends to get dragged down in the direction of the gravity. It's not that big of a problem but it still changes the input by couple of values. Incrasing the friction using the allen key doesn't help. 

I want to ask if this a thing with all throttles or is it just me having something loose?

 

Thanks for any tips.