Have a Barton chisel I'm restoring and the handle has issues,,,Wood is solid but there is a major crack,,See pics....Handle appears to be held in with a pin of some sort? And the crack on one side has a bit of the wood gone as the crack progressed...I'd like to restore the handle in place w/o having to deal with the removal and pin..Then I have issue of filling gap on one side.....Your advice/suggestions will help me decide...Can always turn new handle but I have several others waiting in line before this...Your thoughts? Thanks

2017-03-24 13.52.59.jpg2017-03-24 17.09.45.jpg2017-03-24 17.09.54.jpg2017-03-24 17.10.15.jpg