(a) General rules.--Except as otherwise provided by the will, if the assets are insufficient to pay all claimants and distributees in full, the shares of distributees, without distinction between real and personal estate, shall have priority of distribution in the following order:
(1) Property specifically devised or bequeathed to or for the benefit of the surviving spouse.
(2) Property specifically devised or bequeathed to or for the benefit of the decedent's issue.
(3) Property specifically devised or bequeathed to or for the benefit of other distributees.
(4) Property disposed of by will in the form of a general bequest of cash, stocks or bonds.
(5) Property disposed of by general devise or bequest and not included in a residuary clause.
(6) Property devised or bequeathed in a residuary clause.
(7) Property not disposed of by the will.
(b) Demonstrative legacies.--Property out of which a demonstrative legacy is primarily to be paid shall be deemed to be specifically devised or bequeathed to the extent of such demonstrative legacy.