It's that curious "jumping to the conclusion" that's so interesting, to me
at least (a  non-mechanic.) What led you astray was that you concluded,
before verification, that your injectors were to blame, and this, because
the problem arose AFTER  you had the injectors cleaned (ergo, BECAUSE you
had them cleaned.) This is an amazingly difficult mental challenge, in
mechanical diagnosis and other fields. Needless to say, no apology
necessary. Let he who has never jumped to a conclusion throw the first stone.