Pits in chrome on hydraulic cylinders...?maintenance

[IslandTractor]

I have just noted a couple of very small (1mm diameter spot, maybe 0.1-0.5mm deep) pits in the chrome of the dipper cylinder rod on my BH. Slight surface rust at and around those spots. The BH lives outside in the summer. I've covered the cylinder rods with a thin coat of grease. What else should I do to prevent these pits from expanding and is there anyway to repair the defect without removing the cylinder? I presume these pits will eventually damage the seals/o rings on the cylinder so that, not cosmetics, is my concern.

Thanks.