That's a great dog I'm so glad he found the Meade family, love seeing updates on Baby, U got a big heart for animals like me. Animals can't pick there owners it's always a crapshoot.
My wife got me hooked because she said there's boobs in it now I'm committed after however many seasons and there aren't that many boobs anymore, I even think I saw a penis on one episode.
If u still have your stock ALT u could pull both regulators out but at that point might as well put the stock ALT back on until u get a new regulator . I would pull out the H.O . Regulator and look at the brushes to see how they are worn I'm betting there pretty much gone.