I wish we could use those as they have much less wear, but at our track they heat up too much, and loose grip at 5mins.
They used to work on our carpet, but something changed in the last 6 months or so.
We can get away with mag in stock, but the car will not be consistent for 8 mins.

Perhaps if we were allowed to use Paragon instead of JTG it would be different..

I'm sure at iic they will be the ticket.