I keep forgetting to tell you about my proposed solution for the gutter-fascia
problem which has caused intermittent infiltration of water into ceilings and 
walls.

The conventional solution is to remove and replace the wooden gutter 
and the fascia which is integral to it. Inasmuch as it is possible that
the ends of the rafters are, like the fascia nailed to them, so damaged
by water as no longer to hold nails, then the affected rafters would
by conventional techniques be "sistered" with accessory rafters of similar
dimensions. This procedure would require removal not only of shingles, but
also of the wooden sheathing of the roof, at a cost of $100,000 or (much)
more.

My suggestion, unconventional but inexpensive and highly effective in 
keeping water out of the rafters, walls and ceilings, is as follows:

Water now leaks into the house only from the gutter and above. From the
gutter down the house is tight. Therefore I would instruct a willing and
cooperative roofer to extend effective roof coverage over the gutter,
keeping the gutter (and the inside of the house dry) by one of three
methods:

a) by inserting a sheet of aluminum flashing perhaps 12 to 24 inches wide 
under the outermost shingles, parallel to the edge of the roof 
and to the gutter, and to nail this flashing to the roof 
(if necessary through the shingles) and to the outer edge of the gutter, or

b) by inserting instead of aluminum flashing, a rigid sheet of waterproof
plastic (the manufacturer of which I haven't yet identified), nailing the
proximal edge unter the outer shingles and the distal edge to the outer edge
of the gutter, or

c) extending the roof with plywood and shingles to the outer edge of the 
gutter. If necessary, the gutter could be supported with braces to the
wall below.

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Keep the foregoing in mind, if the crisis occurs after I'm out of commission.
I think my suggestion would work and would save a great deal of money.