At least a dozen ways to re-skin a scupper. right now water is probably seeping into the bilge and rotting the putty wrapped wood blocks that support the floor and tube configuration.
Here's a link to my recent replacement effort. 4" Moeller or Sea Dog brass drain tubes, $3-4 ea., Moeller Drain tube flaring tool, $35; small tube of of 3M 4200, $6; about $5 of 2:1 epoxy and filler flour and a bit of masking tape and paper. Dry feet at the end of the day, priceless. Any questions feel free to ask. Bushwacker over-drilled his and created a thicker epoxy barrier between the wood and the brass. Thus, if his brass tubes corrode, the wood block will still be sealed keeping water out of the bilge. Do some searches as he suggested. Good luck. It's not that big of a deal...
http://s261.photobucket.com/albums/i...pper%20Repair/