20 bags of lime finishing plaster (Gilmerton EH17)

I have around 20 bags of 25kg Premixed (wet), non-hydraulic, traditional lime finishing plaster https://www.chalkdownlime.com/products/Lime-Plaster-Finish-p142980347 Project they were bought for no longer going ahead. They've been stored in air tight bags, but are probably too "lumpy" for finishing plaster due to being stored for too long. Would be completely fine for something like pointing though.