BEFORE THERE WERE ADS, BEFORE THERE WERE ENDORSERS, BEFORE PLAYING GUITAR BECAME A FASHION, A YOUNG MAN NAMED JIMI PLAYED BLACK DIAMOND STRINGS
An important part of Hendrix's sound was due to his use of carefully selected string gauges, which evened out the guitar's response from string to string. String gauges would run .010, .013, .015, .026, .032 and .038. The big difference here is that you're using the .015 for the third, because if you use the .017 for the third, the actual sound of the guitar is very G-heavy.
The electrical output of the strings is dependent on the square of the diameter; if you square all the diameters and look at them, yMany, many times people use a set of strings that are entirely imbalanced, and they just don't sound that good. Most people would say a .010 to .013 is the correct jump. Also, the .015 is much better for the G than a .017.
A .015 squares out at .225 and .017 is 289. So you're going to get 28 percent more output just with a two-pound different in string size. ( Interview with Roger Mayer ) You can get much more of an idea about the balance of the guitar.