I'm back in business. After looking more closely (as you suggested) I found that I could set it for Degrees and Minutes. When I did that it showed
42'47.72N on the 310. The Meridian had 47'42.725N. Now both units show the same location on Mapsend.
Thanks everybody, for your help. I'd have never found anything with the 310 the way I had it set up!
By the way, I haven't heard from Magellan yet. I figured this would be a quicker way to get results.
Thanks again,
The dog
Cache as cache can.