Seconding what MW said; The stock GT clutch uses either 2 or 4 shoes, depending on the setup. You would be very wise to get an MIP 4n1 clutch. It's alot like the tmaxx clutch, in that it uses two pins, and has a spring to pull the shoes in at idle.
While you're at it, get an MIP heavyweight flywheel. It allows for super-low idles.
I have that setup on my GT, and love it.
To answer a potential question; the 4n1 part of the name comes from the 4 possible mounting positions. You can adjust it for low idle, or for always-on racing (dirt oval), unlike the stock shoes, where you'd have to cut the shoes for the proper weight.
That's another thing you can try; take a little off the shoes. Only about half-way between the little 'holes'.