Congratulations. Think you’ll continue to be pleased with both the lighter weight and quality. Mine are still going strong after a year.
As far as increasing the hi-hat spring tension, two other options are to 1) swap the internal spring with a stronger one, or 2) add spacers to the internal rod to compress the spring further. The latter is how other stands with external adjustment achieve it and the mod is discussed further in this thread:
Ok, so I've finally tired of the light spring tension on the YAMAHA HH3 CROSSTOWN hi hat, this last weekend made it clear its just too loose for my game. It was always borderline -not useable- and definitely not the response Im comfortable with, so the order was given to 'tighten' it up. This...
www.drummerworld.com