I would like to clean the blanks on some of my rods. What would you suggest I use? Thanks

Water and dawn should be fine. If you really want to splurge, KVD Line and Lure conditioner. 

 

For the cork I've had good luck with the Mr. Clean magic erasers.

Second the magic erasers. Cleans cork up good.

Any mild detergent with a fresh water rinse is fine. For tougher stains denatured alcohol is safe and effective. A wipe with Armorall or Pledge adds shine and a little protection and dirt shedding. 

I rinse my rods with freshwater especially after fishing in saltwater. So far it has worked well and I got +20 year old rods that are in great shape cleaning them this way.