Could be WS Electronics has finalized rebanding of the system and have removed the old frequencies Try this LCN order, if it doesn't work play around with the LCN order and see if you can discover the new alignment.
Code:
LCN 01 851.20000
LCN 02 851.75000
LCN 03 852.45000
LCN 04 853.13750
LCN 05 853.68750