Re: Changing handle?
If the rod is a four piece you can sand and cut off the old cork. Then make a new grip and slide down onto the reel seat. The obstilces could be if you have a hook keeper and you may need to take care in not damaging any logos. You will also need to be sure that the new cork has the correct inlet for the reel seat. The hard part of the job is the removal of the old cork grip.
It is not an overlly difficult task to do this. You may aslo look on the Mudd Hole or a tennis supply web site and see if you could get by with a grip wrap.