Another thought is to lose your tube amp...
I just threw up in my mouth a little bit...

(jokes... jokes)
OR, buy a tube amp, if not equipped with one... lol
If you are proficient by any means, just start jamming on the stuff you need to learn, and what you already know will fall into place.
The hardest thing for me to catch on to were the little transitional chords in some of these progressions (like a A/Db on a D to Bm walk-down, for instance; or any aug chord). That was just one thing I never needed playing ZZ Top and Cream.
You'll find that a lot of stuff will literally fall right into place.
You'll also find that learning stuff that is more fitting in the Gospel genre will make your rock playing that much more on point. For real. I'm a much more mature player now than when I was rockin' the bars years ago. I can still play it all, it's just tastier now.
Have fun, man, and welcome.