Thought I would attach an article in our local Porsche club newsletter. I know these guys well. They are not mechanics but took on a huge project and fixed the 2nd gear problem while they were doing the clutch and ims. There will be a second part of this article in the May issue. It can be done in your garage with a little research and a lot of guts.
P.S. Done on jack stands.
http://www.kypca.org/content/pacesetter/2012_04.pdf