Hello evey one

i am new here and new to humidors i have purchesed
a vector hm -404

http://www.vectorkgm.com/catalog/tem...ors/hm-404.cfm

ok first off i tryed to calibrate the hygrometer but could not figure out how to take it out of the case to do it and didnt want to brake it so i have left it in the case and did the testing in the case.

what i did was used a snapple bottle cap filled it up with salt and added a little pater to it intill it looked a bit pasty. i then put it in the top shelf and left it for 6hrs
i then went back and set the hygometer to 75 and closed the case again looked back again and was a diffrent readying agin so set it to 75 again.

im assuming i should of done the bracking in prosidure to the case first?
my readings were not low they were high like 80

i just woundering set up the humidty block with 50/50 and put it in and getting the same reading a steady 80

i will being going out tonight after work to pick up some distilled water to brake in the box

any suggestions or comments?