I have a 93 American Strat Plus with the gold lace sensors. Had this for many years. It now seems that I need to operate the volume at 10 to have any kind of volume or good tone. Playing a Drz MAZ 18 MKII. Could there be an issue with the guitar pickups or pots? Also looking at replacing them with a zexcoil loaded pick guard with the vintage and throaty buckers. Any thoughts?