I just recently purchased a HPI Trophy 4.6 truggy and i have to say i am absolutely in love with the truck. I know it's not the best race vehicle out there, but i am slowly replacing parts to get it there.

When launching from a dead stop the weight shifts back, the front tires balloon just a tad, and loose a lot of traction. All of the power moves up front where theres not enough traction to really get the truck moving. I'm attributing this to the stock grease filled diffs.

I've read that F:7K, C:10K, R:3K is a good balanced starting point. I tend to prefer just a bit of oversteer , so would a F:7K, C:10K, R:5K give me what I'm looking for? I've tuned the brakes to about 70% rear 30% front and i really like it. I would like to get a similar feel while under power.