Just got a SCX. To get the tripod block or standards off the rail, you have to remove the end cap, which is secured with a knurled nut. I have the nut loose, but the end cap is not loose. Do I have to take the nut off? Does the end cap come loose, or do I have to pound it with something? Given that I have buggered a number of things in my life by just applying too much force, I want to make sure I am not missing something. I am also in the market for a two piece rail.