You are correct. The hamstrings are what have been giving me problems and not so much the quads.
I was having knee pain about 20 years ago. The orthopedic surgeon put me up on the table, stretched my leg and said "your hamstrings are too tight."
Then he proceeded to draw a diagram that showed how tight hamstrings prevent your leg from fully extending with each stride, which in turn puts more stress on the patella tendon and lower back.
Did a 3-mile hike in a blizzard yesterday. Located a coyote den.
