Its not a home cocked, I downloaded off this site. Homeport shows it to be "HXUS039R-US All Canadian West Coast g2 V2012 v13.50". I have no idea why its so large. Windows explorer shows the file size to be 4,194,304KB. I was looking for Garmin Bluechart G2 (non Vision). I think I found another one I will try to download.

Thanks.