Put $400 into a fancy espresso machine mod that made worse coffee for 3 months
I bought a used Gaggia Classic last year and got into all the online forums about modding it. Everyone swore by the PID temperature controller kit, so I dropped $120 on one and spent a weekend wiring it up. After that the shots ran sour no matter what I did. Messed with the settings for three months, bought a $60 grinder upgrade trying to fix things, wasted bags of beans. Finally took it to a shop in Portland where a tech told me I installed the thermocouple wrong and it was reading 8 degrees off the whole time. He fixed it in 20 minutes for free. Has anyone else sunk money into a DIY upgrade that actually made things worse?