Custom keybindings

[og900aero]

I want same keybindings, than micro text editor, but I have two problems:

1. Control+Shift+x -> quit without changes. I set the following:

"C-S-x" = ":quit!"

But I get error message: unsaved buffer remaining: filename

2. Ctrl+c and ctrl+v for copy and paste:

C-c = "yank_to_clipboard"
C-v = ["paste_clipboard_after", "delete_char_backward"]

The problem is, the selection with mouse (or keyboard with extend_char_right left etc) than yank_to_clipboard, and when insert other place with "paste_clipboard_after", "delete_char_backward", I get one more character than I selected before.