my guitar produces inmense levels hiss and feedback when i use my guitar, and it doesnt go away unless i touch the cable or amp(its not the amp, ive plugged the guitar into 2 amps and it had the same problem) so i come to u guys to see if u can help me solve this issues it just started doing this, it didnt do it 6 days ago, but i took the guitar apart and i think that might have affected it(grammar?)

oh and i cant get the guitar intonated, no matter how much i increase the string lenght theres no reduction in the diference between 12th armonic and 12 fret
Morpheus Droptune
Ibanez Weeping Demon
Bugera 333xl 212
open it up and check the wires on the output jack check the ground wires for the bridge scratchplate and controls.

try another cable

worse cas scenario is ground loop but that`s more of a hum than a hiss.