I have this model bp machine and I think it may be giving high readings. I take my bp twice a day before breakfast and before dinner. I was at my doctor's office today and his reading was 25 points less than my average home readings. Is there a way to calibrate the meter other than to take it do a doctor's office and match my readings to his? My email address is nilon2@windstream.net and my phone is 502-921-9224. Thanks Bill Hall