Arkless Electronics
Trade: Amp design and repairs.
I wouldn't dream of doing that to mine as it's too nice and original but I rather like the idea of making a factory looking example with colour matched painted a choke on a replica chassis or a chassis that someone has already butchered. It's probably what Harold would have done himself without budget constraints.
Indeed several more expensive and mainly earlier Leak amps did have chokes. I recall seeing comments here and there over the years to the effect of "pity they cheapened the St20 by missing the choke out"... it doesn't suffer too much for the lack of one I guess