Yeah.. my new water tank is a 40gal.. old was 50, the nipples on the new tank are 2" closer together.. so being me i just pulled the pipes in and tightened em.. (not an excessive amount) and it's eating at me.. so i got 2 elbows and will put a step in one of the pipes so it all lines up perfect... Just like everything else... it's not right if i don't do it 2-3 times..