Hi all,

I have an ibanez grg170dx and I seem to be having intonation problems. Its fine up until the frets in the 17-19 area and higher where it starts to go a bit sharp. I noticed this was around where the bolt-on neck was attached to i was wondering if there was any link. It hasn't been a problem except for the last week or so. I'm also in need of new strings so that probably doesn't help but there are no other problems up until those higher frets so that's why i didn't go right ahead and blame the strings. Any thoughts?
Gibson Les Paul Studio Deluxe/Ibanez RGA42/LTD EC401vf
Whammy IV>Pitchblack>Dunlop 536Q>Fulltone Fulldrive 2>Hardwire TL-2>MXR 10 Band>Line 6 M13
80s Carvin x100b w/ cab