a longer injector?

[Kibokojoe]

Purchased injectors for my sons 1991 735i e32 m30 from Precision Auto Injectors last December. Finally got around to installing them and found out they are too short. I have purchased from them in the past and the exchange for my 5 were a perfect fit. Anyone got any suggestions?

http://i273.photobucket.com/albums/jj225/kibokojoe/wrong_injector.jpg