360 dropping in neutral. PIS?

When I bought my 360, the dealer knew very little about it. It was sold as a project car. I inquired about the clutch life which they said had 40% left. 3 years and 5,000 miles later, it would sometimes drop into neutral during shift changes. I assumed that it was the clutch reaching the end of it's life and ordered a new one. I was going to do the major first and when I went to lock the flywheel I noticed that the friction plate was just about as thick as the new one. Could the PIS or other parameters be off? I've never *knock on wood* had the transmission light come on.

 

I will be doing that, however, if it is that close to being locked in gear, wouldn't there be a light?

 

Good to know. Thank you!