Sonic carb cleaning?

[Silverlegacy]

Hi all,


I booked my bike in last week for a carb clean as i have owned the bike for a year and didnt know the last time it was done, the garage said he was going to put the carbs in a sonic carb cleaner and this would give them a better clean than just a strip and clean.
Although now i have the bike back it seems to be runnign worse than ever and when i looked at the carbs last night, the exterior didnt look all that clean, almost the same as before, but when i looked up on youtube for sonic cleaners the carbs they cleaned came out pretty spotless?
So my questions is, should they be clean on the outside also? or do you think the garage has pulled a fast one and just done a small amount of cleaning and charged me for something hes not done, especially as its running rough and now barely idles at 1000 - 1250 rpm and have to keep it around 1500 to tick over properly without sounding like its going to cut out.
Have attached a few pictures to show current condition of the carbs.
Thanks