Century Fisheye HD Adapter, Canon Bayonet Mount

i rather annoyingly managed to drop my lens on the floor a couple of weeks back this is a canon ef 70 to 200 mil it's the f4 version so not the f 2.8 i bought this lens in australia in 2009 i think so it makes it about 12 years old cost me a thousand bucks at the time it has been my go-to lens i do actually really like it but unfortunately hopefully you can see there or i dropped it it landed on the bayonet end and bent the bayonet bracket i have tried to modify it with a screwdriver but clearly it's broken now given the age of the lens um i don't really want to give up on it but it's not worth spending a lot of money to get it professionally repaired so instead i went online went on to ebay and i managed to track down a replacement bayonet coupling for this lens from a company located in china i think it cost me about 20 quid i ordered it two weeks ago i think and it arrived this morni