transfercase won't shift into two hi and noticed that the drive shaft doesne't even turn whilt in 4hi locked or unlocked hubs.Does this mean ther's somethng wrong with my case in the inside. I'm getting preety frustrated But this is the first problem since I owned for the past 12 years beside usual tune up. Anyone have a spare hanging around collecting dust would rather just swap right out then rebuild if that's the case. It's 77fj40 350,stock tranny and case. I live in western mass if there's anyone that can help me on this.