I’ve got a interesting problem. I tried some weights from a KE4 S head that are 4 grams In a KE4 Tour head  and some did not fit. I’ve also got some 2 gram screw in weights and wanted to pop them into an older forged head and they did not fit. The weights sometimes do not fit flush into the weight ports. I’m finding the heavier weights are the weights that tend not to fit flush.  The 2 gram weights are indeed a hair shorter than the heavier screw weights.  There’s not much I can do about it, but I thought I’d let everyone know.  Anybody having this problem?

Woody comment on answer ago