I give up. I have tried every local hardware store and window/glass
store, I've surfed the web everywhere I can think of, and I'm coming up
empty.

I need to replace the weatherstripping on two doors: a metal entry door
and a sliding patio door.

* The metal door had/has magnetic weatherstrip that sealed to the door.
This made a great airtight seal, but because they left room for the
magnetic weatherstrip, no normal replacement weatherstrip is thick enough
to fill the gap. I can't find any weatherstrip that fits the door.

* The sliding door had plastic weatherstrip that sealed the latching side
of the door on both inside & outside.

The original weatherstrip on BOTH of these doors used a mounting style
that seems to be uncommon: there is a kerf on one side, and the actual
seal is on an adjacent side 90deg away. Rough pictu (fixed font
required)

|
|
--|
****| kerf
* --|
*| *** = magnetic weatherstrip
*| door jamb
* ==============
******
****** magnetic seal
******
========
| door
|

I've found some magnetic weatherstrips that are similar, but the kerf is
turned 90deg from this: it sticks straight into the door jam directly
above where the magnetic seal is in this picture.

The sliding-door weatherstrip is similar, except instead of a magnetic
seal, the weatherstrip flares away from the door jamb to friction-fit
against the door as it closes.

I went to a local window company and they dumped out a box filled with
maybe 50 different kinds of weatherstrip. None of them fit, and in fact
not a single one used the 90deg-off kerf that both these doors use. By
chance they had some weatherstrip that was exactly like what the sliding-
door uses, but half the size. They'd had demand for that size (on
windows) so they had it custom made, 1000' minimum order.

This is insane. Isn't there any way to find weatherstripping to replace
what was originally there? The original equipment lasted 15-18 years,
and I'd just like to find something similar. I've tried the stick-on
foam garbage and it typically falls off about the time you turn your
back. There are nail-on options that don't look like they'd work nearly
as well, and I'm not sure they'd seal the steel entry door because none
of them fill a gap as large as the magnetic seal did.

Any ideas?
Gary

Dude, I think you're scr3w3d. I've never seen such a detailed post get
no replies ! Have you contacted the manufacturer ?