2016 SO 419 bow thruster insert

[Alan]

Hi, has anyone on this forum had any experiences with the removal and re-sealing of the bow thruster tunnel insert. My 2016 SO 419 has been out of the water for 2 weeks now and there is still a small amount of water dripping from the insert.  Today I cut the sealant around the insert and about an egg cup full of sea water driped out.  I have cut as much of the mastic out as I can but the insert still remains solidly fixed to the hull.  Any ideas how to get it out would be much appreciated.