I'd never had a GPS outage on my 430W until the planned GPS jamming testing this year. But now I'm having them more often in flight. My avionics shop said they would replace the antenna first and check the connections but I'd love to hear from anyone else that has had a similar issue. On my last flight, I lost the GPS data, regained it in 30 seconds or so, and then lost it again for another 30 seconds. After that, it was fine for the next three hours. Thoughts, suggestions, or experience?