250-500cc wr 360 traction

Any advise on taming a wr360, bike was used for motard and has a stage two head and fmf gnarly pipe fitted.i really enjoy riding the bike but the rear wheel spins out too much on low throttle which makes woods riding and cornering on gravel bit hairy.
its a 2003 with tmx carby and 15/48 gearing.
i was wondering if there are some inexpensive buffers eg retard timing, fly wheel weight or throttle cam etc til i get my skill level up.
This is only the second bike i've owned and i have been riding now for about 10 months, it is however a wonderful machine and my riding has improved greatly, almost as much as my fear of trees.
thanks in advance for any input.

You can lower the compression buy adding an additional base gasket. That would also shift the port timing toward a top end power band a bit.

Set your exhaust linkage so the main port does not close as far.

Add a Fly wheel weight, which I have for sale in the classifieds.

Throttle cam might help, but I'm not real impressed with those.

Fly wheel weight can do wonders. I add one to a KX500 I had a while back and gained much better traction. Before that, the rear wheel would just spin...

Retard the timing 1-2 degrees. I can feel a huge difference on my YZ when the timing is -2. Much more mild mannered on the bottom end.

JO360,

Rather than mess with de-tuning the engine, I added a Steahly Fly wheel weight and had EFM build an auto clutch. Motosportz Kelly spent a day on it in Moab and really liked the motor. Very low end friendly and quite easy to ride. If you air mail your stuff to EFM, they can usually turn it around in a couple of weeks. Their stuff is first rate and very bullet proof. You might send Kelly a PM and ask his oppinion as I am kind of walking with blinders on when it comes to that motor.

Walt