What's wrong with it? A few of us here are very adept at freewheel maintenance and a few of use have boat loads of spare freewheels. If you SuperLeggera is skipping my recommendation is a non-alloy Regina or Dura Ace, both are readily available and will last much longer than an alloy freewheel.

EDIT: slipping pawls.....on the wheel

1. Flush freewheel out from the front side. Spray with liberal amounts of WD40, spin, let sit and spray again. Repeat this process until the effluent out the back has the same color and turbitity? as that going in. Let it sit overnight so it all drains out.

2. WD40 is not a lubricant. So now you need to lubricate it. I use chain lube, sometimes heavy motor oil, everyone has their own secret formula. Lube it liberally, enough to flush all the WD40 out.

3. That should take care of the sticking pawls.

Off the wheel:

1. Place freewheel in ultrasonic cleaner with some dawn dish soap...run a few cycle, then follow above steps. In lieu of an ultra sonic cleaner soak in blistering hot water/w detergent for 15 minutes.

I can rebuild it...pastorbob can rebuild it...