Yes I have the manual, thanks.
Well, if you have the manual and have read it, you'd note:
Page 12, Figure 3.2, Item #4 is the bias adjust control.
Page 16, Figure 4.7 and Para. 4.3 (Step 4) tells how to adjust it.
You cannot have "0" Ip on transmit in SSB and expect the transmitter to actually function properly.