Some of the anodizing is chipping of the tops of my strainers. Can the be redone? Any suggetions?

If they are actually chipping, then its most likely powdercoated. Anodizing really doesn't chip. They can be stripped and repowdercoated or painted.

True. Anodizing is in my words, colored etching. Course, anodizing can be performed without any color additive. How about calling it chemical sand or glass blasting.

Makes sense. Can you sand blast them?

You may have to sand blast them to get the old powder coat off of them. They make a powder coat stripper, but I don't know how well it works.

Soak them in acetone and the powdercoat will come off fairly easily.

Let your powdercoater do the prep work.

If anyone is stripping powder i would recomend you call the powdercoater and ask then what to use or how to do it. I once used an aircraft greade paint stripper to take off powder from some throttles. It came out clean but then during the baking process it was outgassing and causing pitting in the powder...the guy was pissed as he had to redo it 3x!
I've heard that the primer for PVC tubing (that purple stuff) has some decient results taking powder off. I now just spend a few hours and just sand blast it....takes a while but works the best.

Both Fireboatpilot and Wally are correct. Take it from true experience, let your powder coater recommend the correct method to remove whatever you have on the surface (or slightly beneath) of your parts. Work with a professional powder coater. 90% of what you trust will be done correctly is in the prep work.

Sounds like your parts are easily packaged/shipped via UPS. I recommend these guys in Michigan. They provide their services to Sunsation, Sterling, McLeod and many performance boaters. These strainers mounting plates were coated by them. First class work.
http://www.exoticcoatings.com/index2.html