Okay...I am in the straight rows section and realized that my ADD kicked in bad and I ordered 1 ball less than I needed of SWT - Karoake in the 278 colorway for a full size clap. aaauuuggghhh. I have 2 options:
1. Buy the ONE extra ball of yarn I need and pay shipping - BOOO!

(there are a couple of LYS in Miami but it's hard for me to get out...work full time and have 2yr old, need I say more?).
2. Shorten the clap. I have no idea how to calculate 70 yds of yarn relative to how many less repeats of the straight rows I should do. Make sense?
Ideas?