Chuck Bramwell's OCW Saturday Century Group's Lake Mathews Century ride, from The Square in Irvine. I did a little extra credit when I reached Lake Mathews ahead of the group, and did a repeat of Cajalco Canyon. Then, I was gathering wool while enjoying the descent and went past the turn, setting me back an extra few minutes. LOL. Pete came out, but I ended up hanging back with Chuck for a while, and then fell behind when I did the repeat. I saw Pete and the others at the last stop at Carl's, but I let them head out a little before me and then had a messy flat which took me a while to change and I never caught back up. I may have to "rethink" using Stan's No Flat with tubes. It did not seal the flat I had in the rear tire, which did not look that serious.