Tip questions

[treid]

My first post on this forum (although I scan the forum every morning with coffee) and I need help.
I Have a 03 s tip for 15 Mo.(closing in on 100K) and have been doing all maintenance myself. The car is my wifes daily and my weekender. Yesterday the car would not shift into reverse. Drive functions normally but when shifting to reverse no typical positive clunk is felt although some feeling of reverse is felt especially when easing on the throttle . Have not been able to find anything associated with this specific condition. Durametric is normal, no help in bentley. Back up lights come on.
Anyone in 986 land have words of wisdom? All input is greatly appreciated
Terry