Hi all, hope you’re keeping well. I have a small (less than 1m2) back to brick to patch but run out of hardwall. Checked wickes website Monday and thought supply was back to normal but oh no it’s all gone now. So question is is it worth a punt with some out of date stuff I have or do bad things happen? I have open bags of hardwall dated 19/12/2019 and a vintage 6/4/2018. And an unopened 19/03/2020 multifinish. All bags still soft and powdery, been outside but undercover and off the ground. Tiny area so can get it on quick but any thoughts on if it’ll go rock hard and wreck my tools or not set n stick, or worse?