Nice work Glen.
I am still to solve my oscillation issue on 20m+, but I have also decided to upgrade the LPF toroids to T50-6, I am concerned that the T30 will be overwhelmed at 20W output... Maybe need to do all the emitter 220 caps... and play with the feedback loop on the RD16.
I did order a bunch of the MPSH10 too. They have a different pinout to the 3904s? so have to go in the place twisted, like the RD16.... ?
73 Nick,
Nick VK4PP