My 99 SVT has always had this problem. It started getting worse with 32K on the odo, so I took it in to the dealer. They said that the shifter bolts were "stripped out" and that they had to order a new shifter assembly to fix it. In the meantime, they tightened the "stripped" shifter bolts. The car now shifts great into every gear. If it does not deteriorate, I am not going to install the new shifter assembly. I can't believe how easy it is to shift and how precise the shifter feels. Unbelievable.

On another note, they ruined my dash putting in the dash repair kit (recall). They have ordered a new one.