A lot of the yoyos that I use over time become responsive. I think it may be my axle but I don’t know how to tell whether I have axle strip or not. I have tried putting new response in the yoyo but nothing changed.

Clean the bearing.

Mine become more and more unresponsive as the bearings break in.

Clean the bearing. It at least gives you a starting point to work with.

Must be the bearing. Idk of you ever lube your bearings but if so maybe whatever your using has caked up in the bearings. Maybe trying dropping them in mineral spirits…not sure just a suggestion