Greetings, I'm about to start brewing again after a very long absence. When I last did a kit brew I followed the advice from an English Home Brew Book that said to remove the gum-like substance from the yeast head on the 3rd and 6th days so you just leave a clean white froth. This got rid of the tasted of "kit twang" that was a feature of the kits in the early days. Is this still necessary or is it not a problem with today's kits. Many thanks, John