Had an 07 Strat delivered today, spent some time setting up and all is good but when I’ve plugged the guitar in through the red channel on my EVH amp (high gain), it sounds very thin and clean. When I give the lead a little wiggle and pull it out a bit, I get the sound you’d expect. When I’ve got it in the right position to give me the ‘full’ sound, I’ve tried all pickups and rolled up/down all the pots with no issues. As soon as I touch the jack it goes thin and clean again. Popped the jack plate off and everything seems ok, nothing lose etc. Am I right in thinking this must be a jack issue? Lead and amp input checked with other guitars and all is good with them so it’s definitely the guitar.