Several tricks have been tried with the 10m Wispy to try and get the carrier balance right, so far none have been entirely successful. A balance control potentiometer had no effect at all, and changing the diodes seemed to have no effect either. So, I reverted the circuit back to its original form, put a pot in place of R11 to make it adjustable again, and totally rewound T2, physically symmetrically. An RF bypass capacitor has also been put on the AF modulation input
Next step then I think is to sort out the biasing on the driver and PA, so they dont get so hot, and to measure the output power, see if it really is producing what it should be! But these are probably all tasks for another day.