What kind of problems do you get if your quads are relatively tight instead of your hams? Everyone is always stretching their hams, maybe not so much their quads. I never hear, your quads are tight and weak, it's your hams are tight and weak, apparently this asymmetry is epidemic in trainers lol. I know my quads have always been pathetically weak compared to my hams and I've always been stretching my hams as well as training them several times more than the quads, maybe that's very uncommon. I think it was common with the westside lifters (Louie's Simmons training philosophy), they even claimed they used their hams to squat lol, and the proof was in their tiny quads (really).