Hate to say it but wouldn't it be cheaper / easier just to get the right head?! It's also much more likely to work properly.
Have your tried AHM ? Adie specialises in alfas but suspect it may cost more than the right head would. From memory he's based a little way up the M3.
Powered by Invision Power Board (http://www.invisionboard.com)
© Invision Power Services (http://www.invisionpower.com)