2001 Saturn SC1 Reverse Slam

I just bought a 2001 SC1 with 120,000 miles on it. When I put it in reverse there is a delay and then it slams into gear. It doesn't slam as bad when it is cold (first thing in the morning) but slams hard when hot. There is a new transmission filter on it and the fluid is full. The forward gears shift hard occasionally but mostly good at this time. Any thoughts? I was going to replace the ECTS but I am having trouble locating it.

Heres the ECTS
http://www.youtube.com/watch?v=JC0U53w_Htk

You need to do Wolfmans reverse slam remedy asap. I will post a how-to for this