Hello everyone

,
I'd be thankful if anyone knows the answer to my problem...
I'm in a band (lead guitar) that plays Instrumental oriented music (think Satriani-Gilbert stuff)...everything is ok until I have to execute a note-bend on the guitar...I have trouble listening to the frequencies that help me tune my Bends while playing...especially on the G-B-E strings...
I thought that this happened due to Volume level but whatever volume we play at I still have the same problem...
Is this something common during
live rehearsals?Does it have to do with where I stand in the
studio OR the lack of monitors?
This is the layout of Drums and Bass/Guitar Amps:
Facing towards the Drummer:
-Drums in the Center
-Bass Guitar on the Upper Left corner
-Lead guitar on the Low Left Corner
-Rythm guitar on the low right corner
Thank you in advance