910 Adaptor

I have a Fujikura Motore Speeder shaft wit the 910 adaptor already on it but the adaptor was not put on properly.  How do i go about fixing the adaptor and putting it back on the shaft correctly? 

If the adaptor was installed by us, please take it to your local pro shop and have them set up an inspection and repair. 

 If this adaptor was put on aftermarket by a shop, we recommend that you take it back to where you purchased it and have them repair it. 

Thanks for the advice.