Re: guitarest issue...
Take it from me, I have wasted too much of my time in bands where a member was not working out, it will only get worse.
A band has to be able to play with conviction in its music and if not everybody is totally relaxed and at ease with each other it causes more harm than good. You have to be able to not worry about egos and the like getting in the way of you being honest, and honesty is always the best thing when it comes to someone you do not get on with musically.
"Sometimes I wake up at night and wonder where the hell the worlds going too"