I find the buckle waistbelt on the 360 All Positions carrier hard to adjust. What can I do?

Published in 360
To tighten the waistbelt, pull on each end of the waistbelt little by little until you get a tight fit and the lumbar support is centered on your back. You can also try to alternately pull the ends of the waistbelt up and down until you get a tight fit and the lumbar support is centered.