How is the advance/retard base plate attached to the shaft?

[RoyalBlue]

Hi, I am working on potentially replacing my Lumenition ignition with a Tri-spark programmable unit. Does anybody know how the advance/retard base plate is fastened to the shaft? Does anybody have pictures of the base plate (front/side/back) and what lies underneath?

If I do go ahead with the transplant I will post a detailed account of what I did (and if it works!).

Thanks
Shaun

[RoyalBlue]

Don't worry chaps - I figured it out. Does anybody have a spare auto-advance (or base plate) that they want to sell?

Thanks
Shaun

[Smokey_Paul]

Hi PM me