Hi Mate,
On the carpet I needed to tighten up the hydradrive compared to the tarmac but other than that it didn't loosen off. Howver, I didn't get too much track time to get the feel of it as a bit later broke my diff bolt trying to tighten it a bit more and no spare...
The brief time I had it all working I'd say the hydra was def more progressive than the slipper and did promote less wheelspin when putting the power down. Worth trying again I think... So nothing conclusive but watch this space!