Well so far I am not impressed frankly!
Attempting to fix the first metal parts to the top( Step1) I discover that one of the hex screw holes has zero thread inside it and the hex screw will not bite at all despite several attempts and Im unable to proceed and faced with the dilemma of having parts for a unit costing over £97 that I will never be able to assemble.How on earth is this fixable. 
I would appreciate any comments.