Note that I said the problem was with the A3 40M add-on kit. Did you have a 40M add-on on your A4s and did you try to operate them during the cool early morning hours when there was condensation on everything? At the time I liked to work DX on 40 CW as the sun was comming up.
I'm sure lots of people use them with no issues. Its just that in my particular location in this particular Wx condition I had an issue with it. And yes, the water drip holes were on the bottom of the traps.
I have the A3S Add-on for 40M and I have been trying to track down a continual problem with this antenna. The SWR 2:1 points moved up on all of the bands. Basically un-usable without an antenna tuner.
We had a close encounter with a tornado, with 90mph winds. Not a direct hit. After it passed the A3S was perfect as the day I installed it. All the bands were where I set them. That was middle August 2012
Oct 2012 it's back to its old ways and all of the 2:1 SWR points went up in frequency. Like the entire antenna was shortened. One example..20M is now 14.400-14.700.
So there may be some issues with A3S's made recently.
A lot of Hams do like the Mosley's