We have the same return policy on all of our items. Items can be returned as long as they are in resalable condition. The bars can't be all nicked up, so if install them be sure to wrapped them in something such as masking tape to reduce the chance of damage upon install.
As a bars diameter increase the less clocking or offset it will need. Now you may ask than why did we re-clock the b/e bars. We did that because the b/e bar is a longer bar. So even though they are the same diameter as the A bar they a longer so they twist more so they need the off set for pre-load. Where the A body bar is shorter and is stiffer that the b/e bar at zero clocking.