Here are the 4 different TI trays. They are getting harder to find. Last time I was there, there were more plain black trays than TI trays. If anyone is interested, I have one extra set of the 4 trays, I can let you have them for $10 plus S/H. I also has a few extra of the red with both the green and blue dots over the "I". They are $3 each plus S/H.

Mike