Using my K3 and other Radios thru my KAT500 at powers under 100 watts, I have the following problem: While transmitting at swr's under 1.5, the Tuner will go haywire & try to retune & go into the tune mode.. Lots of relay clattering….. I have to stop transmitting & go into normal tune mode & re-memorize the frequency. Antennas are End Fed Zepps. Thanks Sid KC2EE