Here's my set up from the last Torch meeting, the festive fun race. The track was moist and a bit greasy. My YZ-4 was really good and handled the grease and bumps really well.

A few people have been having problems with a loose rear end on the car, I have a few tips you can think about trying.

Firstly, I know the cars tight, but try to make sure the rear belt is not tighter than it needs to be, if it's way too tight then this will act as a hand brake and we all know how that is on greasy roads!

Secondly, a really good tuning option is the new adjustable front kick up. Speaking simply: the flatter the arm is, the less dependant it is on weight transfer and will make the car more reactive but also more difficult to drive (low bite) having more front kick means the car transfers more weight dependant on throttle or brake. This in effect transfers more weight to the rear on power and then More to the front off power, making the car more stable on power and also better in bumps.
For wet astro I have found that maximum kick up is best, although over 1 lap it's ultimately a bit slower, over a run its a lot easier!

Steering arm, something else you can easily adjust is the steering arm (carbon plate on the outside). If you are in the forward hole then this is the most aggressive steering, if you are in the back hole it's the least aggressive steering. I have found that with less front kick, you need to run the back hole, but with the increased front kick you can get away with moving to the aggressive hole on this arm.

Rear inner pin height, this is the inner hinge pin on the rear arm. You can raise this up or lower it. For low bite, run this high and it will increase your traction when you are on throttle and it's better in bumps. Run this low and it will be better in high bite flat tracks as it reduces grip on throttle and increases corner speed.

I hope this helps a few people, to find perfect set ups takes time. No one really runs on the gym floor/carpet tracks we do, or even wet astro much to be honest! After a few months, we will be more dialed and ready!

This is a box kit car. Just used shim pack to space the rear suspension blocks up.

Belt doesn't need to be super free. Just comparable to front. I tried running it right to try and was a handful. But stock 8mm belt on loose setting was good.