I eventually had to resort to filing the latch down cause it would not clear even after the block clicked in... It fits well now and the latch is finally movable albeit stiff but movable. The paint has been rubbed off in spots and the metal is kind of pitted from all the prying etc. so now I've got the itch to paint the thing. And the slit in the cleaning kit worked to pry on the latch. Thanks for the help.