Xbindkeys to make CTRL + ALT act like ALT GR

I've been able to get CTRL + ALT working (mostly) with xbindkeys and xvkbd. However for it to work I initially have to press it twice. After that it works smoothly. __Also this doesn't work in some programs such as xed and gnome-terminal and I was wondering why and how to fix this?__ This is my .xbindkeysrc config:

xvkbd -xsendevent -text '{'"
    m:0x1c + c:18
    Control+Alt+Mod2 + ccedilla

"xvkbd -xsendevent -text '}'"
    m:0x1c + c:19
    Control+Alt+Mod2 + agrave

"xvkbd -xsendevent -text '@'"
    m:0x1c + c:11
    Control+Alt+Mod2 + eacute

"xvkbd -xsendevent -text '#'"
    m:0x1c + c:12
    Control+Alt+Mod2 + quotedbl

"xvkbd -xsendevent -text '['"
    m:0x1c + c:34
    Control+Alt+Mod2 + dead_circumflex

"xvkbd -xsendevent -text ']'"
    m:0x1c + c:35
    Control+Alt+Mod2 + dollar

Why does this not work in xed or gnome-terminal? Thanks in advance!