Someone like the carby master should work on an aftermarket bolt on extender kit for the shaft. It would be a hit IMO if you advertised that it will allow you to bolt a Victa two stroke onto other bases with relative ease.
He seems to have solved the archilles heel of bad needles, now to expand the options for bases to mount them on.

Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!