bathtub faucet

I have purchased several IPS spouts and each one leaves the spout and wall with a huge gap OR the threads don't reach. I can not find one with only a 2" reach-- except slip ons... am I missing something??? I have looked everywhere and at many several high end places Please help!!

Hello good people! I hope you're all doing well. So after you guys helped me to get my Case 3000 toilet issues fixed, I'm hoping you can help me with my next vintage plumbing issue. I'm in the process of having a new shower stall put in my master bathroom. That has sent us down a rabbit...

Has anyone seen a tub fill spout like this? (pics below). Its very unusual in a few ways - very low profile and no sharp edges & the water in the tub can be filled to the rim of the tub (fill spout submerged) since the spout blocks the overflow and somehow sealed. (I've taken a deep bath in...