The only way to correct a traction roll problem as huge as yours is to change the type of tires. I have a ? tho, did you put the 60d slicks all around or just on the fronts? Were they the 60ds made in Japan or Thailand? Look the same, but there is a HUGE difference.

There are a # of other things you can try. Have you tried sway bars? You might try running a different combination of shock oils and springs. Stuff everything you can inside the chassis or side saddle down low. But the best suggestion I have for you is to go around your local track and find out what the "fast" guys are doing. Most people will give you a help and most advice from people not familiar with your track surface has to very general.

I run at 4 different racing venues and each requires different tires and set ups. Track #1 ride 3030 rears, 3023 fronts front shocks 30wt oil and red springs rear shocks 90wt oil white springs. Track #2 Cut down Sorex 36 TC tires with spice inserts. front shocks 6owt oil and blue springs rearshocks 40wt oil and yellow or red springs. You get the idea.

My best advice is to ask the locals. They know the track and you do have some "hot" Mini guys in your area.