ok so i wanted to buy some new knobs for my bass and for my guitar because they didnt match on my bass and i was at guitar center and i asked a guy who worked there about them and he said that some knobs who arent meant for the guitar ruin the sound of the guitar so i was wondering if thats really true? because i have regular black knobs on my explorer guitar and explorers always come with those knobs that have the numbers on them (i didnt put those on by the way, it came like that when i bought it used)