I saw your blog post a couple of days ago which reminded me that I had produced a little PCB of your design to test it out.
It works very well for the small number of parts used. The tuning was quite broad with the polyvaricon used but I was still able to resolve cw fairly easily down on the 40m band.
I am quite sure I still have one or two of the unpopulated PCBs knocking around in the shack should anyone want to try and build this regen.
These single evening projects that result in a useful working radio really give 100pct enjoyment factor.
Keep those designs coming !