Almost a year on, and I finally got around to checking my strainer. The issues I was having were both power loss on hard right hand turns in AX and Track Days, and I was having my fuel pump dying on me about once a year.
Last time this happened was 2 months ago, and one of the PCA guys who was there and also runs a 944 repair shop mentioned that every time he replaces a fuel pump, he automatically replaces the strainer. The idea is that if the strainer is broken then junk at the bottom of the tank can get into the close tolerance fuel pump and cause it to seize. For the $30-50 it costs a new strainer is cheap insurance.
When I took the strainer out it was not that obvious that there was a problem, but there was one indeed:
The seam where the netting is glued to the support is where these things fail:
Tested the new strainer out at the track today, and I was able to drive the car with no issues down to 1/16 of a tank.
So my advice to you is, if you are noticing power cutting out on right hand turns, or you are going through fuel pumps like Dorritos, then check your strainer. You'll be glad you did.
Cheers, Keith