If the crack is creating a space an 8th of an inch wide between the neck and body then the neck should be removed and reset. If the actual heal is cracked it should still be removed, repaired and then reset. I have had good results with titebond, make sure you clean out the dovetail joint of all the old glue ofcourse. I would look up a number of different repairs on youtube or even google for pictures of the process, from removing to fitting the neck and how to clamp it. As for removing the fretboard, dont do it unless the truss rod is not functioning. with highspots you can see what filing frets does, or just remove the frets and relevel the fingerboard. Another thing to keep in mind is some acoustics have bolt on necks like taylors, seagulls and various others. You may be lucky and just have to tighten 2 bolts through the soundhole..Pics will be really helpful. I hope this made some sort of sense and best of luck to your project. -Nate
