5740C pops out of 4wd.

[pontiacman]

I have a 2009 5740C that will pop out of 4wd, especially when there is lots of turning/direction changing. Has anyone else had this issue? Is there a linkage adjustment that would help?
Thanks,

 

[pontiacman]

I emailed Montana and got a quick reply. I shimmed the spring that holds the detent ball in. It seems to have fixed the problem.
Scott