I have been brewing for a little over a year now, I am starting to get serious about it. I have done a few batches and I am starting to get bored with the ready made kits. Also, I have plastic secondary and primary fermenters and they are starting to get a brew funk to them. I scrub and scrub and scrub and sanitize, rinse and repeat and they still have a faint aroma of brew. Is this normal? I don't really want to switch to all glass carboys because I just got laid off and times are tight. Any thoughts?