Thanks for the response guys.
]
I called these guys today, was looking at this spring with the Spring Rate = 130

http://www.generalspringkc.com/product_p/33-907.htm

I am worried about wrapping up my springs. I know they are old, but after installing the new engine, the u joint straps ripped out, it didn't take much.

I don't understand if spring rate translates into resistance to axle wrap.

The XHD springs don't list their spring rate.Anyone know about where they are rated?

Am I worrying too much? I just want to be able to launch it without too much rotation.