I think I will try and get both reel and bottom plate ground and wait till the regrind after in a few years to possibly replace.
I'm learning a lot as I go forward with all this, mower shops in Adelaide have a very negative attitude to SB's and I've been told NO parts are available, so good to know you can buy new reels.
One last question, does anyone know how to remove the reel pulley?
I know it's on a left hand thread and have removed the bolt by jamming the reel and using the special tool I made for the clutch replacement, but the pulley is still attached and cant see how, and dont want to force it.
I need to remove the pulley to get to the bolts to remove the reel.

Dont think these bolts will be unscrewed to easily
[Linked Image from i56.tinypic.com]