Hi Jim,
I know you are a member of our Carbon Cub EX Builders group on facebook. I have several hours of videos on covering and show using a piece of teflon to iron poly spray tape edges, etc. I would recommend watching these.
You can get teflon sheets for “almost free” on Amazon. https://www.amazon.com/Teflon-Sheet-...=teflon&sr=8-5
I usually really go over everything very good before putting on the poly spray. You can use a cooler iron to go over all the taped edges after your last coat of poly brush. Usually there is very little lifting of the edges after that with the poly spray but sometimes it does happen if there isn’t much brush on the edges.
Q