This was my third and longest ride on the LM PC's. I went at least 80 miles in 5h and 22m and did two very long climbs(one 10 miles and one 6 miles) that varied between 6 percent grade up to about 10 percent grade with short stretches of 11-15 percent at times. I am finding that I can keep the click/clack to a minimum as long as I am in the proper gear. For me that is usually a lower cadence of about 60 but will know for sure when I get my cadence sensor for my new bike computer. Uphill is generally much better for keeping the click/clacking to a minimum and I usually get the feedback when going fast down hill or accelerating fast uphill. I am going to ride these cranks on the White Mt. Double Century on Sat, 26 Sept. even though they are killing my hip flexors. Currently I have about 130 miles on these cranks between three rides. Soon, I will be using both traditional PC's and LM PC's on back to back rides.