Easy enough to either get a warranty replacement for the cap or buy one of the many caps available for the -89 razors for about $10 or the whole new head assembly from Muhle for $25.My first Muhle R89 (zamak) lasted about 10 years and the finish still looked brand new. But the threaded stem snapped off in the handle one day when I was changing the blade. That sucked. That's when I started buying SS razors.