We have home in Central Oregon built in 1994. Tub/shower value in a seldom used bath has been leaking (now dripping pretty fast) from tub spout. Valve has no mfg ID. It has round chrome plate above the tub spout with single control lever that points down when off; H&C are at 9 and 3 o'clock positions. Control opens up from down (6 o'clock) counter clockwise to 9 o'clock. We'd like to identify the mfg to find parts or at least who carries them before we shut off water to the house (no separate shut-off) to minimize chance of being left without water to rest of house in case if a delay and not being able to reassemble it while ordering parts. We checked Delta's website, but none look quite the same. Home Depot's valves don't look same, either. Probably a pretty cheap generic! It would be possible to access valve through the backside by cutting through the wall in a hall closet, but we hope to do this from shower side. It is single, one-piece fiberglass tub shower with the house built around it like all houses are these days! Any suggestions will be appreciated!