tmux, urxvt, and copy-and-paste woes…

I am running tmux inside urxvt. I would like to select and copy text using the left mouse button and paste it using the middle mouse button -- I am very old school. I did get tmux-yank almost working but need to hit SHIFT+Mouse 1 Select doing the selection, then hit y… This is a lot of key presses. Anyone knows how I can get this simple behaviour working better? Here are some versions: ; tmux -V tmux 2.2 ; urxvt256c-ml --version urxvt: "version": unknown or malformed option. rxvt-unicode (urxvt256c-ml) v9.21 - released: 2014-12-31 options: perl,xft,styles,combining,blink,iso14755,unicode3,encodings=eu+vn+jp+jp-ext+kr+zh+zh-ext,fade,transparent,tint,pixbuf,XIM,frills,selectionscrolling,wheel,slipwheel,smart-resize,cursorBlink,pointerBlank,scrollbars=plain+rxvt+NeXT+xterm […] ; awesome --version awesome v3.5.9 (Mighty Ravendark) • Build: Mar 7 2016 18:43:56 for x86_64 by gcc version 6.0.0 (mockbuild@) • Compiled against Lua 5.3.2 (running with Lua 5.3) • D-Bus support: ✔