Given budget constraints :roll: I have gone for a new mech, and chain. Looking again, the cassette looks in pretty good nic, but the derailleur is a mess, when compared to a new one, all the teeth are sharp shark fins.
I have been thinking about how this happened. Just taken a small 1ft drop off, and as I landed, the derailleur got ripped up. I suspect the bounce, let the gubbins get sucked up.
I’m hoping a new clutch mech is going to help. So the drivetrain is a year old, and through a surrey winter, around 800 miles, but I clean and lube regularly, so I feel the crankset and rings should still be good. Have to admit, I could have paid more attention to looking after the mech. Note to self.