Accessing NH 326 Hayliner knives

I may be showing my ignorance but, before I crawl into this older New Holland 326 small square baler to sharpen the knives, is there an easier way to access these knives than climbing over the pick up fingers and squirming my my way to them, or by doing the same through the bale chute? And, would it be better to unbolt these two knives and sharpen them on a grinder in the shop? I would appreciate knowing an easier way to access and sharpen these knives if there is one...

Vincent

Accessing NH 326 Hayliner knives