My shower drips whenever the bathtub is filling. I can close off the tub water and the shower runs just fine without water leaking from the tub. This is the type with two tub faucets and a tub spigot with diverter near the end and a massage type shower head. Do I just need a new spigot to replace the converter? Thanks
Your household pressure may be too high. The mixer valve has direct openings to the spout and shower; only the pressure drop due to flow to the tub keeps water out of shoer head; but if incoming pressure is high, the water will rise to the shower.
Many newer mixers have a restricter in the shower outlet, but an older one may not.
Finding a spout which allows greater flow may help, especially if present spout is partially blocked by mineral buildup.