Are the forks identical? If they are return the CRC ones because they are much better at returns (I have returned some shoes under warranty and they were actually lovely about it).
I would avoid dealing with dave hinde again if I were you. I am currently trying to get a refund for some wheels that were built wrong and I am roughly a step away from taking them to court over the matter.
If you do want to take them head on I recommend you go to citizens advice and get letter templates that you can send them (didn’t work for me) or you can start quoting the distance selling regs seen as the forks are unused any normal and decent company would issue a refund with no quarrels, I would not expect the same service from Hinde. If you then don’t get on with the letters give CA a ring and they will talk you through the next steps, after all that has fallen through (which it will), trading standards will get involved to help you try to resolve the matter and make sure that when you do take them to court that your case is as strong as it could be.
Once you are at court I have no idea what will happen, I am not that far down the line with my lovely dave hinde racing products.
Edit: When it comes to charge back as well I was told by CA and trading standards that most banks now only do charge back for purchases over a certain amount, for my bank its £250 so it would cost me money to get them to chase my purchase.