Remove Crank?
The holes run fromt he mains to the rods. So, one way or another, every rod and main will need to come off. So why not make it easier? The time to do it is now. Take the rod caps off one at a time, carefully push the pistons up in the bores,and pull the mains. Wash the crank right, brush out all the holes, and reinstall hte caps, reset end play, and retorque the rods. Should take one afternoon being careful. Dont mix up the caps either...lol.