I have just finished laying my new patio using Indian limestone but have not yet don't the pointing. However I have noticed that 3 or 4 of the slabs have a very slight amount of movement (when you step on opposite corners). By slight I mean pretty much not visible but you can hear the slab moving. I laid these as suggested on a full bed of sharp sand cement mix (which for the record is a real pain in the behind to get things level). Should I worry about this movement or will the pointing stop it? I don't want it to starthe damaging the pointing in 6 months time. Any suggestions. Thanks.