Has anyone got experience using the above. I am using them for the first time & wrecked my trusty old gun by having to extend the handles with a couple of lengths of pipe. I can manage alloy ones one handed but these stainless ones are proving a real problem even with a new heavy duty gun designed for stainless rivets. I'm wondering if they are always a problem or I've been sold a faulty batch. Only using 10mm x 4mm dia. rivets to secure 2 x 2mm thick pieces of flat stainless plate together so did not think they would be this difficult to use.Tried 4mm & 4.5mm holes. Thanks.