Hi.. So was Driving the 6 today and noticed it wont stay in netrual... when you try to put it in netrual it either goes in forward or reverse? Is this a linkage problem or is it a deeper problem?
Wouldn't hurt to start looking at the linkage. Is the lever itself not staying in the neutral position as well?
First thing I would do is check the linkage for wear and correct adjustment. There are lots of pins and ball joints to wear on those things. You do have a manual I hope..?
Our D6D does the same thing on occasion, just a linkage adjustment.
The bushings could be worn in the transmission lid. Just be careful when jumping off it when it's ticking over. They can start moving abit