I then got out the needle gage and lo and behold......#2 Addies measure 3mm....which is between a #2 and #3 and the Hiya's measure 2.75mm. This is a signicant difference in the smaller size needles.
So, I ask myself: "How come I never noticed this before?" and then it dawns on me. I've only used the number #2's for hubbie's socks and I do it by measurement. 68 stitches of 2x2 ribbing for 6-1/2 inches, the heel, and then stockenette for a total of 14" in length and then the toe start.
Now don't laugh (which I know you will!), but this now all makes sense to me when hubby said one of the socks feels tighter than the other! Duh! It would!
So, how do the solve the problem with my monkey socks? The only way I could, I went to my LYS, got another skein of yarn, started another sock, emailed the swap hostess and my partner and say! "I have a problem! The socks don't match!" So I'm late for mailing my package, but am making good time on the second (or would you call it the third) sock and should have them finished, washed and blocked sometime today!
So excuse me all as I go back to knitting this sock so it can be mailed, hopefully tomorrow! :)