Visit http://www.qsl.net/w8lky/images/06.jpg This was my problem 2 years ago. My holes on the trap were open but the inside wasn't. After a rain I could not use my TH-7 on 15 meters, more rain and 20 and 10 would be useless also. Cleaned out the traps and no swr problem. It took the bugs10 yrs to make this nest. K8LN John k8ln@neo.rr.com