[TenTec] fsk bug ?????

[f5moo]

hello

ithink is a bug

i running the last cqww rtty in *fsk mode* with N1MM logger in SO2V one 
way VFA with the first window MMTTY
mode normal and the second way with another window MMTTY mode normal
the probleme is in menu i put the mark high is ok on the VFO A and 
listening the same frequency with the VFO B
and nothing the same signal
i go to CW for the comparison is ok the same station on the same frequency
i go to the usb mode is ok the same station on the same freqency
i go another FSK mode* nothing again *I am obliged to put the rit on the 
VFOB -2210 Hz to received the same station
i think the option MARK HIGH is operat only on the VFO A not on the VFO B

all the sugestions are the welcom
thank s for me and excuse my english is very very bad

terry F5MOO