So the thread that @RRC200Tdi started earlier in which I incorrectly interjected an answer got me thinking.
These dynamic timing advance kits (https://stegs4x4.co.uk/product/dynamic-timing-advance-spacer-kit/) seem, according the dyno outputs on @NRS91 's website, provide a decent increase in power output.
My pump has been overhauled by DieselBob and setup with what he described as a slight advance on the timing so that it is better suited to run SVO.
Will one of these timing advance spacers still be a benefit on my pump? It performs well since the overhaul (did so before) and has had the normal tweaks on the boost pin and slight increase on the pump pressure screw.
I would be keen to hear peoples thoughts.