I tried to attache Luddy 60's BD tom rail mount to 70's double tom mount L arm rod(probably 9.5mm), while it is really hard to pass a knurled L rod through the hole. The L rod is big for the hole.
In my understanding, the L arm rod size is same(9.5mm) for 60's and 70's. But, am I wrong and do I miss something??? I appreciate your help.