Mark-Does The 720 have any way of locking in a route once I get it sent to my liking? I run West Virginia to California quite frequently and have a route that I want to run! The 720 will sometime start out with that route or I will adjust it but almost always adjust itself somewhere along the line! Not a big deal but an aggravation to be sure, especially if I don't catch it right away! When it readjust itself and I'm on an unfamiliar route it can be especially problematic!