Damaged Derailleur?

Does anybody have a bent or otherwise unusable (ideally Ultegra 6700) derailleur they’d be willing to sell me for parts. Apparently Dura-Ace 7900 is also compatible.

I just need a new P-Tension spring for mine and every bike shop i’ve talked to so far has told me to go buy a new derailleur.

Or if you know where to get a p-tension spring please let me know!

https://www.ebay.com/p/Shimano-Rd-m985-P-tension-Spring-Y5XD19000/1168363548 ?

Alternatively, if you don’t want to wait for shipping, you can try searching at one of the bike co-ops, Concordia’s right to move has more parts than mcgill’s the flat, if you want to rummage around you could get lucky.