Broken roller axle rack clips

Be sure to order extra rolled with axles. The clips the snap on to the top rack are delicate and I broke two of them putting them in place. Be sure to snug them on slowly and carefully, it seems that the soap scum buildup on the rack creates additional friction. This friction makes you need to push the part on harder, and when you do it snaps on too hrs and one side of the clip will break off.