Orifice for propane lantern

[Twitter]

Does anybody know where I can buy either a new orifice for my propane lantern (not a coleman) or possibly the whole valve assembly ?
I've narrowed it down to the orifice being plugged and can't find anyone or anywhere to find a replacement. It's been suggested that I boil the dirty orifice and than let it dry completely to see if possibly there's an oily residue in it, but if this doesn't work I'll have to find a new one.
Any help is GREATLY appreciated.
Thanks in advance !
Chris

[Dave]

How about trying some carb cleaner, or some solvent like that, to disolve the gunk.

[MikeR]

might even try bringing it by one of those Heating outfits, I brought in my old camper furnace and they had it running in about 10 minutes, they have alot of them special tools.

[Surface Tension]

I have the same problem with my Greatland lantern. I took a bread twister and a thinned it down to size with a stone. Then cleaned the orfice with that. Never have had my Coleman plug but that Greatland has a lot.