Jerry,
Be aware of the fact that not all power valves for the 94 are created equal. The one you want needs to have a completely flat surface where it mates up to the bottom of the carb. Newer valves have a "raised" machined surface that won't seal properly to our old carbs and will leak.
If you're not sure what you have, post a pic or contact Sal (scicala) or CharlieNY here on the Barn.
Mike