Just had a call from a lady today asking to clean her 80/20 wool mix carpet.She explained to me that she has previously tried to remove a stain on the carpet,but afterwards it left a scuffed and fluffy mark.Going to see it on thursday,should i test the carpet with my agitation brush first of all before i attempt to start cleaning?Do you think the scuffing is there because shes overdone the stain with a stiff brush?Or is this type of scuffing a common problem with wool carpets?Any advice welcome.