Ugh, the scale being off by 8 grams thing hurts to read because that's such a sneaky little problem. I've been there with baking where you keep getting the same bad result and you start blaming yourself or the recipe when really it's your gear lying to you. Three tries of gummy bread would've had me ready to throw the whole loaf across the kitchen, honestly. If it were me I'd probably weigh twice for a bit just to calm down, then go back to trusting the ratios once I know my scale is solid. The ratios aren't the enemy here, the scale is.