Well I've seen him praise your builds a lot, so you're doing a lot of stuff right! While you're here, maybe you can weigh in on this, too. @Snfoilhat was asking above about my speaker jack wiring, in which both the ground and sleeve of the extension jack are currently un-wired. It looks like on this detail of your layout that you've got the ground of the extension jack wired back to the switch of the primary speaker jack. Is that correct?