Barnaby, the problem is, you didn't relate your question well. This is a drummers forum with plenty of knowledge. We know what a fulcrum is. Your question was how to STRENGTHEN a FULCRUM. Doesn't really make sense. . .when you know what a fulcrum IS.
as JFunky stated, READ and APPLY Cherri's response. That is the best advice you are going to get on this forum.