2005 Honda Accord windshiel wipers

My daughter had Kwik Kar install new wipers. They installed them backwards (swapped the long and short sides - don't know how). We have the correct wipers on the correct sides now but on the long side it appears the wiper needs to be put into a tension clip on the wiper blade assembly to maintatin the correct position on the windshield. We don't know how to make this work. As it is the wiper only contacts the windshield for about two thirds its length and the last third sweeps over the glass. How do we get the wiper blade to stay in the arm "tension" holder?