The mystery of Joe Chandler

Some time ago, I mentioned the mysterious 'Joe Chandler' as a possible Zodiac suspect (everybody is now keen on Richard Gaikowski as the Zodiac, with Gaikowski's only big flaw as a possible suspect being questions whether he was in the Bay area early enough). There is a long and detailed article on Chandler written by James Renner (and see the 2005 article by Steve Huff), which considers the theory of Chris Yarbrough that Chandler was a wanted bomber named Stephen Craig Campbell. The main problem with this is a huge height discrepancy - Campbell was 6'2", Chandler 5'7" or 5'8" (there also appears to be an age discrepancy of about 10 years). I'm still having trouble with the fact that investigators could find no fingerprints for Chandler.