Hello. I have an older bathroom sink faucet that I'm trying to install a new HOT cartridge in but can't find one anywhere. I found one at Lowe's that looked exactly the same but the cartridge would not push down all the way. The OD must of been a tad to big . Can anyone please identify the manufacture of this faucet and/or tell me the # of this cartridge and where I can get one at. I already contacted Moen, Delta and American Standard and they said it wasn't theirs. Any help would be greatly appreciated!