Do you ever find that only AFTER you are finished with a mix and are in no position to alter it that you begin to find flaws you would have undoubtedly changed? I find that although my recordings and mixes are progressively gaining in quality, there are somemtimes things i hear only AFTER i am in any position to change them. (i.e. already sent to mastering) I have found this to be the case throughout my whole experience in audio recording/mixing. Is this common among other practicing sound technicians? Does it ever really eat at you? Do you just shrug it off? Do you just sit yourself behind a pair of monitors and start mixing a new or existing song and forget about it? Please feel free to share any thoughts and experiences... they are much appreciated. Take care.