? Indent the original text with '>' when replying

All,
This isn't about models but newsgroups. I just bought a new computer =
with=20
Windows Mail in place of Outlook. I want to include the indented '>" =
when=20
replying to posts, so I went to Tools, Options, Send, News Sending =
Format,=20
Plain Text, Plain Test Settings, and checked "Indent the original text =
with=20
'>' when replying or forwarding."
This works on some replies but not others. I subscribe to =
rec.aviation.mil=20
and of course rec.models.scale and have the same problem on both. =20
The only common thread seems to be replies to smaller messages get the > =
while replies to larger messages do not.=20
Any ideas? I did not have this problem with Outlook.
TIA,
Curt
KVPS=20