any harm having my valve assemblies exposed to weather (mostly rain or wet road conditions)? i have my valves right under the doors on my burb and its raining here in so cal...im noticing that one of my dumps is sticking or something...it sometimes doesn't stop dumping even when im off the dump switch. i was thinking of making a splash plate or something to at least alleviate direct water contact from the road..any help appreciated...thanks in advance..

97 gmc suburban