Any overlays have to be ground back to the glass, and then starting from the tip , warm up first couple inches of glass you will soon discover just how much heat is needed, its only to the point where it is almost uncomfortable to touch but not so much that heat radiates to laminations, then very carefully insert a boxcutter blade slowly under glass and inch it down along limb heating as you go It is essential that the blade doesnt meet the lamination under glass at an angle as that will bring up lam fibres. Once it gets started it becomes quite simple to continue down limb using said process and sometimes glass almost peels off like a banana skin. Hope this helps.