P25 is 9600. Are 3600 and 9600 both set to Normal? You cannot use the Tinker Creek site. The PRO-96 cannot trunk track 700 MHz frequencies. Try entering all 4 of the control channel capable frequencies in the Union 800 MHz site. They may have switched to an alternate.
2 (2) | 087 (57) | Union | Union | 851.750 | 852.2875c | 852.800c | 853.075c | 853.450c |
The PRO-96 is prone to frequency drift on 800 MHz frequencies. You may need to adjust VR4 inside the scanner to get it to work.