Did you mix the correct ratio of cleaner to fuel? Most of those products are packaged to treat 10 - 20 gallons of fuel so you should of added no more than 1/2 bottle if you had a full tank of petrol.
The injectors may be fine.
There is a fuel filter that may have filtered off any particles you had.
I would change the fuel filter, and try it (with new gas).
If still a problem, the best solution is to send the injectors away for service.
Good luck!
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