Welcome to the forum. Nice looking 750, with some interesting mods. An interesting list of 'previously owned'.
Did notice in the last pic of the CR's, that they are hanging down. Seems this is a common issue when the carbs are no longer supported by the air box. Over time, the intake boots droop from the carb's weight, and this will cause float level problems. Might want to consider changing those out, and get them level again.