I did this mod (sorry I'm chiming in now, after the fact) PLEASE gravity feed this skimmer. It's just wrong to feed this with a powerhead. You shouldn't need glue as it's in sump and if it leaks a bit it won't affect it much.
Crox, you can get the parts from Lowes with the exception of a uniseal. I also recommend the Gate mod if not that way already. You may also want to check with ER for a newer NW. They changed their NWs recently and you can order the newer version from their website.
http://commerce2.i2net.com/able5stor...ategory_ID=627