I recently got a CZ50 32acp pistol and it misfired about 30%. I suspected grime and a weak hammer spring so I cleaned it and looked for a new spring but it was out of stock everywhere. I decided to make a spacer to increase the spring tension but then ran across a neat fix using a 25acp case drilled out as a spacer. I tried the 25acp case trick and now have zero misfires. Sure was an easy fix!