Ken, thanks for that info. I do have brake cleaner in the shop but I had already purchased some Raid. That did a number on the wasps. They dropped all over the place and I was able to drop the nests.

Brake cleaner is powerful stuff. I've read on several welding forums that brake cleaner and welding is a dangerous combination. Can lead to severe illness.

On the plus side. I pulled my LT-40 from the building and moved it to the shop. I'm getting it ready for its maiden flight. Finally.