Got a few hours again this morning so made a start.
Again, I'm not a head porter by any means, however looking at what came from the factory, I'm pretty sure I've made an improvement!
Straightened out the ports at the inlet gasket entry.
Removed a few of the casting humps and smoothed around the guides. Decided to leave them full length as this is by no means a performance build. May do bit more, however I was over it for thr morning.
Will clean up the valves, lap them in, and most likely call it a day