I recently bought a New Englander to scratch the itch I've had since getting rid of the Renegade I bought back in the '80's. As everyone knows the trigger leaves a lot to be desired. I read an article about polishing the tumbler to get the weight down. My question is how to you disassemble to get to the tumbler ? I see the screw holding the hammer and another on the opposite side. Not being familiar with side lock I don't need parts flying everywhere when I go taking it apart. Any help would be appreciated. Thanks in advance.