Just as an update too! Mower still works well. Haven't got the electric start going yet but that just requires a battery.
As for the sticky clutch it comes and goes. Not entirely sure if it's a linkage issue of if its still falling slightly on the square shaft. Sprayed it a few times with some dry lube and it comes good but just not certain it's wicking in so may have to drop the clutch out and reassemble with some better lube.
Also thinking of modifying the deck to add a set of wheels on the front to help maintain a level deck. Seeing as my yard is fairly undulating I think it warrants a set of wheels on the front.
Updates with progress when I can!