Its good to feel like an idiot every now and then.
Here are some lessons learned for some of the new guys and a giggle or two for the veterans.
I rode the MS150 about a month ago. Some guys at work got a team together and we had fun getting ready for it. They all have Road bikes and mine is more of a commuter setup. I decided to borrow someones bike that was a little faster to keep up with these guys. It would have been a good idea had I taken the time to ride it for a week or two before hand and get it adjusted to me. But no. I simply took the seatpost out of his and but my B-17 on it. A quick eyeball on how high it should be and then we are off for the first day of 75 miles. 3/4 of the way through it the back side of my knee is killing me. I finally say something about it and someone says, "Your seat is probably too high." Well Duh. I was just thinking it was a different type frame and didn't worry about it. I finished the ride and the next day my knee was so bad I did not ride the second day.
Two weeks later, knee is better I decided to finish the ride. I started from the house and it ended up being about 84 miles instead of 75. But I'm good with that and I am back on my bike. 3/4 the way through it and my legs are tired more than they should be. They weren't hurting, just not in shape feeling and my speed was down. Same thing for about 150 miles of commuting. Last night I started thinking, "Why do I feel like I am too tall for this bike." and it hits me. Big Dummy, I guess the seat wasn't tight enough when I put it back on the bike and I had been slowly sinking every since then.
If you want a good quad workout lower your seat a couple of inches and ride 10 miles or so.
Don't ride a long distance without a proper bike fit. If something feels out of normal, it probably is. I have known all of the above and still let it bite me.