:stickpoke so, I try to tune my guitar by ear. -its a dual humbucker OLP- i check the tunning with a tuner just cause im anal like that. it comes out all perfect and crap when i hook it up to an amp and try to do any other chord than the non-barred A its fine, but when i bust out the A its sounds like crap. i usually keep the whammy bar unscrewed so what the hell is up?

im amazed you had the bravery to use the word 'anal' in correct context.

well the olps have cheaply made tremolos so it could be that. Alternatively, you could just need to change your strings.
Fender American Deluxe Ash Stratocaster (2000)
Fender Classic Player 60's Stratocaster
Marshall JCM900 100w head & 4x12 cab

Korg DT-10 Tuner; Boss DD-3 Digital Delay; Jim Dunlop JH-1B Wah; Boss RT-20 Rotary Ensemble; MXR EVH Phase 90.