I'm having problems getting the tongue on the Pearl memory lock on my tom post to fit into the groove into the bass drum tom receiver mount (BB-3, BB-300). When I put the lock into the bass drum mount by itself, no problem - it fits snug and flush. But when I put it on the 7/8" tom pipe and insert it into the bass drum mount, the tongue cannot reach all the way into the groove and won't seat. Although the lock still provides vertical height stability, it will not prevent the tom pipe from rotating. Has anyone else experienced this and come up with a solution?