Chuck .. good luck on tomorrow. Hope all goes well for you. When I received my DL, and before running, it had mostly NO compression. After running a tank thru it, the compression came up good. After two flights this am, the compression seems to be somewhat less, but maybe I am having brain cramps, however it feels less. After my experience this morning with it kicking back, I will NOT be hand cranking it, even with a heavy glove on!

Let us all know how your flight goes with your GP ultimate.

Bruce