On the PL I have PLX selected as the WB. When I go into the Scanmaster setting on the PL and select WB reading. The scanmaster reads 19.9 or something whatever the default is (Like its not reading anything at all, the numbers do not change) The scanmaster does however read the standard O2's. Now the odd thing is that I have a PLX WB guage that reads the WB but it doesnt show anything on the scanmaster except a constant 19.9... How do i get the scanmaster to read the WB correctly. It used to read it, now it doesn't, only thing ive done since i put it up over the winter is change the battery. Any ideas?