Mine also has some play in it. It's been like that since 40k. I didn't really think it was a problem.
Let me know if you find anything.
I will. I'm hoping its a loose bolt or something. The rack doesn't leak anymore...used to but not anymore.
http://www.grandprixforums.net/my-06-gp-gxp-72403.html OBX headers, TEP tranny cooler, ls1 IM fuel rails and injectors, ls2 TB, ls7 MAF, full custom exhaust, Quad retro headlights, full out front and rear suspension work, tuned by HPT by me 8====>