Trimmed coax trench and dug the micro from the 9th out of the freezer to start filling divots and gaps. Was disappointed to find it hard as a rock, and went for a coffee to mourn its passing. When I got back it has thawed, it had frozen rock-hard, rather than just going stiff like last time, and when thawed out looked just like normal micro. Dread to think how much I have wasted over the years. Freeze it, don't pitch it!!!