I've just installed a NOS pair of model J's with the silver screws as opposed to the more modern black screws and I swear these have more high end than the newer ones. 250k pots with Audere pre made for a murky match with the new model J's but these older ones seemed to have a lot more high end. They're definitely model J's and bring the beef but now they sound just awesome! I'm trying to figure out if it's just my tastes have changed or the pups are slightly different. The new ones were too lacking in high end, whilst these older ones have just enough. Anyone else experience this?