74 year Boomer here. Boomer Shots: Physical changes may be a factor. Boomer shots might be the coffee equivalent of Stretch Waists on Blue Jeans. I understand that the older you get past 60 you start having fewer taste receptors. I believe it. I used to be a super taster and could identify scents and flavors in coffee, spirits, and spices. Now I taste some complexity in my espresso and pour overs, but way less. RE: Weighting Shots. Been there done that. Long experience with espresso has trained my eye. Plus on a lever machine I can set the piston on the shaft to control volume. Love Ristrettos in the early afternoon, regular pulls in the morning. I weight my beans not the liquids. Loved the content!