The pinkie test sounds like a good test. I'm not familiar with that rubber part, but you can check to see if they have slotted holes. If they are, you can loosen the bolts and move them outward to close up the clearance against the bucket housing, then tighten the bolts. You can go with the same paddle for another season or two.
If not, I'd just replace with a new set of paddles (about $30) and scraper bar ($15). These scraper bar and paddles should be replaced together since they wear out at about the same rate.
This message was modified Jan 20, 2010 by aa335