Can't "Define default table style"

Question

I am trying to define how a new table gets inserted into my document. I can set the header text formatting, table body formatting, table text etc just fine, go to format>advanced> define default table style but I cannot seem to get the table borders the way I want.
I am trying to have ONLY horizontal table borders appear on a newly inserted table. It seems you only have a choice of ALL borders or NO borders in the table body... not any variation in-between.
Anybody seen this issue or know of a workaround?

Answer 1

Okay, did everything you suggested: Cleared caches, rebooted, checked disks, permissions, etc. (all was fine as I am very meticulous about keeping my Mac in a pridstine state... no junk, hacks, minimal 3rd party bits etc.)
This is what I did:
1 Launch pages
2 Choose blank template
3 Type a few letters of text
4 Save file
5 Insert table
6 Click outside table, then once on table so that it has the four square "handles"
7 Pages Graphic Inspector - change stroke to none
8 Click the horizontal lines button in table inspector
9 Graphic Inspector - change Stroke to the line
10 Click outside table, then once on table so that it has the four square "handles"
11 Format>advanced> define default table
12 Table lines re-appear
13 adding a new table shows all lines, not just horizontal
I tried with different templates (Blank, CV, etc)
I created a new user and tried it there
This occurs both on a 20 inch iMac and a 12' 867 Powerbook. It's strange that other people can apparently do it and I can't.
mac 10.4.2, Pages 1.0.2