In one of our bathrooms we have a shower that has individual knobs for hot and cold water, you have to mix them manually. Over the past 15 years I have had to replace the knobs probably 5 times because they always strip. I’d like to have a professional come in with higher quality knobs than the crap I have been able to find at Home Depot and Lowe’s. My question is whether a plumber would even be able to do that? I know the current building codes here in St. Paul required the more modern single knob stuff, but that would require tile work and we’re not looking to get into that.
Any advice?