I see what you're saying. There is a discrepancy between the instructions and the example. On page 13 (pdf page 17), step 5 says to use % 1RM. But in the example on the same page, bullet point 4 uses the 80% number (360 lbs) to calculate jump size, instead of the 1RM number tested on bottom of page 12 (450 lbs). And then in the fifth bullet, it does use the 1RM (450 lbs.), matching the instructions of step 5.