Shiver Me Timbers wrote ...

Why wouldn't you buy the complete set of plans from the designer and
put some money in his pocket and receive his gratitude and customer
support, ...

Maybe because he's dead? Yeah, I know, he can buy them from Mr. P's
heirs & put some money in their pockets & receive their gratitude, but
if those were valid issues, everybody here should just mail them a
ten-spot gratis. As for customer support from the designer, that's
clearly no longer available.

Daniel