That's the problem when the initial proof-of-concept breadboard edition works so well, there is little impetus for improvement.
In my defence I did make a start on a slightly neater iteration over two years ago, but my only 405 line set has been poorly until recently, so I really should complete it now.
I also need to write up grafting the LOPTX that David (FERNSEH) kindly sent me into the Cossor.
It's working fine; I just want to optimise the value of a tuning capacitor I found necessary, and mount the Tx in the original tin can.