I have an Ibanez GRX55B electric guitar. Its a low range guitar and doesn't have fancy stuff like a Floyd bridge, etc. For quite some time I've been noticing a lot of string warble on the G string. It sounds dissonant, out of tune with itself. I have tried two things I found on the internet in an attempt to fix this: changed my brand of strings, reduced pickup height to reduce magnetic pull of the pole pieces ("Stratitis"), but to no avail.
After a bit of thinking and experimentation, I believe that increasing string tension should make the string tauter and reduce this warble. I could get higher gauge strings, but I'm comfortable with the gauge I have now (I forgot the gauge number though). Instead my plan is to simply tighten the string, but to compensate for this and keep the pitch same, I'll have to increase the length of the strings, a.k.a: scale length.
My first attempt was to turn the screws on the bridge saddle for the G string to increase the length. I maxed it out and thankfully got a little improvement in the tone, but sadly not near enough. And with that, I was out of ideas, but at least my explanation for the string warble seems correct.
Is there any other way to increase the scale length of my electric guitar? Or is getting a higher gauge my only option now? Or is there some other solution for my problem that I missed? All help will be greatly appreciated.