wrote:

Hi group,

There are larve in my static ports again.

Had one of these on the C152:
http://www.theflightdepot.com/acft_accessories.html

We've had the flap type on the Tri-Pacer and now on the C172. Just blow
on it before flight to test that its functioning. Purchased from a local
parts supplier...

We've screened over the overflow tubes as well...