Ron, there are many variables on coils, but primary at around 1.2 to 1.5 ohms ought to be ok and secondary at around 5000 ohms up to as much as 10,000 ought to be ok, although the resistance rating isn't really what matters the most in coils. Still it is a guidepost and I'd say your readings (I'm expecting the 9.1 really is 9100) should not indicate a problem. Mainly you're looking to see if you have an open primary or secondary (which would tell you that you have an open or dead winding). Your primary and secondary windings could have been done with different size wire. If that's the case, if the secondary was wound with larger wire, the resistance will be lower...all manner of things enter into this.