Instructions for grafting 1x1 rib are given in Vogue Knitting, if you happen to have it... if not, it looks like the general idea is to separate the knits from the purls. You graft the knits on one side, then turn it over (so your purls will now be knits) and graft the knits on that side. I don't know how well it would work with a wider rib, but it might be something to try.
There is no right way to knit; there is no wrong way to knit. So if anybody kindly tells you that what you are doing is "wrong," don't take umbrage; they mean well. Smile submissively, and listen, keeping your disagreement on an entirely mental level. They may be right, in this particular case, and even if not, they may drop off pieces of information which will come in very handy if you file them away carefully in your brain for future reference. ~Elizabeth Zimmerman