I watched a few videos on the X2 and can see the Z axis clearence issue. Many thanks for that tip. I found the littlemachine shop has
replacement taper R8 spindles what also looks like an
extended Z axis column.
Though upgrading things like the column and maybe x & y axes travel with is probably not economic.
Nice to see a good range of spares and mods available...even if it is in USA.
The Idea is to eventually upgrade the mill, bypass DRO systems, go straight to CNC via something like Mach3 and 3 axis Geko drives. Well that's the plan.