I've had real problems the last 2 brews with the runoff from boiler to FV. Last time out all manner of hops went through into my solar pump, wrecking it and buggering up the brewday by leaving me pouring out the wort through a sieve into the FV.
OK, I thought; let's wrap the copper stopper in net curtain material to strain out the worst of the debris before it has a chance to block the holes.
Result?

Untitled by chivelegs, on Flickr
The material seems totally covered in goo and runoff dried to a trickle leaving me to bail out again.
Now I'm sure these beers will be OK, as there's not much in the way of wild yeast or other nasties about to bugger up the brew (2c today) but THIS MUST STOP!
My problem is that I use an old Burco with a 'back-to-back C' element so I have to fit any stopper around that. Any ideas?

Untitled by chivelegs, on Flickr