I just ordered and installed 4 new top burners on my stove. I am suddenly not getting any spark at all on the left rear and right front burners. I know for a fact that I had spark before. The right rear and left front spark and light just fine. I know it's not the new burners because I rotated them around and they all spark and light when placed on the left front or right rear. Installing the new burners was pretty easy, and all the connections seemed tight, but is it possible I did something wrong and don't know it? Any suggestions on what to look for and where to look for it? I'd appreciate any help.
Thanks!
Steve

-I also know the problem is not the knobs because all 4 knobs,when turned to "light" will give me spark at the two burners that are working.