I have a couple accounts with some wobbly shanks. I took the cover off the tower just to realize its filled with spray foam. I haven't seen this style of tower before, I've read that the perlick century towers just have screw in shanks, that there's no nut on the backside. I haven't found any videos. I'm worried about just twisting the faucet to try and remove the shank to replace the collar and gasket, can someone please, please verify that I can just unscrew these? Some of them are super loose, ill pull the handle off of the faucet and twist it tighter, but it just comes back loose again instantly, is this not twisting any lines inside of the tower? This has me scratching my head, I don't want to disassemble something I won't be able to put back together right away. Thanks in advance guys