you might check out C218 for good measure, or either C216, or C220, might have gone leaky, but i've got an all too familiar sneaky feeling that it will end up being either L40, L42, L43, or L44, been there too many times to think it'll be any different in this case, lol
see what the output from the TX mixer looks like on the scope, if the signal appears to be missing or way off, then check L43 and L44, or if the signal is there, then look at the outputs of L42 and L40, should be a nice clean healthy 27MHz signal, maybe you'll be able to nail down which one it is pretty easy that way,
you can pull the bias check jumper board during this test so that the final section wont be working and getting hot for nothing,