Like you Tom I kind of thought it must be due to the long stretch of high speed driving, so I fully expected it to do the same thing on the way home...but nada, not a drop appeared to be missing. Then I thought maybe due to some changes in elevation but, the 4,000 - 6,000 feet were almost identical to my daily/home location. I think it must be something with the high speed driving, but the real mystery is why the heck it didn't happen on the way home?? .....

oh well, who knows, just another one of the wonderful mysteries of the VX! :grinp: