I have a PA34-220T Seneca III and i'm wondering if anyone knows of a repair shop for deice valves and components. I have two (1 installed & 1 spare) with the same issue, part 1H44-20 Parker Deflate valve with a stuck check valve so the vacuum system loses suction when the boots blow. I know there are Tempest O/H on aircraft spruce, and QAA.com o/h's available. I was hoping find a shop that could perform a repair. Thanks