As to fixing your "home" address, IMHO you can likely blame TomTom/Teleatlas and maybe your county's GIS department for your incorrect location (if it's residential) and Apple for not choosing Navteq data for use here in North America.
I have two vehicles - a 2007 MB GL450 and a 2011 Subaru Foz XT Touring (the latter comes with nav). Both companies use Teleatlas as their data source on their nav DVDs. Both nav units, Apple Maps, and a TomTom unit put one of my field sites at "1394 W State Road 4". The actual address is "1394 W State Route 4". If I type in "1394 W State Route 4", then the "pin" shows up about 1/2-mile east of there - but it gets better...
Each of the Teleatlas-based "solutions" correctly identify other stretches of "W State Route 4" about a mile east and two miles west of there as "1394 W State Route 4"; the County Seat is the delimiter between "E" and "W" for that stretch of the State Route, in the County - yes, in both directions at the County lines the State Highway has different names.

When I have subcontractors coming from Portland or officials coming from Olympia, I get that call "Where are you at?" or something like that - with different emphasis on one of those 4 words.
It turns out that one of the early plats showed that stretch of roadway as "W State Road 4" and was changed decades ago, but Teleatlas didn't change one stretch of the State highway for some unknown reason. I submitted the change, through the County office, to TomTom about 12 years ago and they still haven't gotten around to it. And, Google's Maps are even farther off, in the opposite direction!

So, I generally tie a colored balloon or flag to a sign now and email a marked-up map that I crib out from a Thomas Guide, so I know it's right!
I hope that Apple's mapping and MS's mapping solutions will improve our options. The only solution that I've found that gets a location close most of the time is "Here", which was Navteq and now is in the hands of VW and Daimler. Incidentally, a few months ago a car with "BING" plastered on the side and with one of those camera units mounted on the roof drove by the site address - Bing's new map site is online at
http://www.bing.com/mapspreview and it's nuts-on with accurate street view and location (but it's not correct in maps.bing.com, which uses an older, farmed-out data source). Do what I did with Apple Maps - get over it and use another product for now, saddened to offer that.