Years ago I noticed the washer in my JLF-TP-8Y coming loose. This is the metal washer opposite the pivot, with the main body in between. I couldn't find a way to get that guy to stay stuck. By chance I recently ordered a 2kg spring, and now this washer stays locked. I guess then that this problem indicates a need for a new spring, no matter the resistance. Is it so? 2kg resistance is a big change from maybe ~0.2kg, haha. How much resistance do you like? Do you know for other players?