How much water in the blge is "normal"?

[Capt Chuck]

Thanks Chuck. I should get the 5" and cut it down, correct?

Also, any special putty you recommend?

Do a test measurement first and just give yourself an extra 1/2" or so past the nut. The 1" dia should surfice.

As far as the putty material, I would make my own with resin & cabosil. If not I guess you could use "Marinetex" or Fasco "Fas-Stone"2 part epoxy compound. Either way cut up some fiberglass strands into it to make it real thick and you'll be good to go