Eddie Rahm

Hey fellas...I have a 1996 polaris sportsman 500 4x4 awd...I'm replacing the left rear axle on it...this axle has a bolt running through the end of it that holds it in the I guess the rear differential that is going to the transmission...has anyone had to do this before because I'm having a hard time getting the bolt started...I was hoping I could get it started with my fingers and than put an opened ended wrench on it to tighten it down...its a very tight space to work with and it's not going to well...I cant get the bolt started on the threads...anyone ever do this job before ? Any help would be appreciated..thanks. Ed