[jackie_w]

@Lurker,

Are you using MSWord to create your RTFs? If so I think you'll get the best results if you use Word styles to create your indents - not tabs or non-breaking spaces.

Personally I prefer to use MSWord doc to filtered html to epub if my source is a Word document, but MSWord to RTF to epub/mobi seems to work OK in the attached sample RTF (containing paragraph indent, non-indent, centred) when converted to epub or mobi.

I also never use the calibre 'Remove spacing...' and 'Insert blank line...' options as I find them too much of a blunt instrument, causing more problems than they fix.

I've also attached the converted mobi.

[Added:] These were the conversion options used

Spoiler:

Convert book 1 of 1 (RTF test)
Resolved conversion options
calibre version: 0.9.4
{'asciiize': False,
 'author_sort': None,
 'authors': None,
 'base_font_size': 12.0,
 'book_producer': None,
 'change_justification': u'original',
 'chapter': u'//h:h2|//h:h3',
 'chapter_mark': u'pagebreak',
 'comments': None,
 'cover': None,
 'debug_pipeline': None,
 'dehyphenate': True,
 'delete_blank_paragraphs': True,
 'disable_font_rescaling': False,
 'dont_compress': False,
 'duplicate_links_in_toc': False,
 'embed_font_family': None,
 'enable_heuristics': False,
 'extra_css': None,
 'extract_to': None,
 'filter_css': u'',
 'fix_indents': True,
 'font_size_mapping': u'9, 10, 11, 12, 14, 16, 20, 36',
 'format_scene_breaks': True,
 'html_unwrap_factor': 0.4,
 'input_encoding': None,
 'input_profile': <calibre.customize.profiles.InputProfile object at 0x038B14D0>,
 'insert_blank_line': False,
 'insert_blank_line_size': 0.5,
 'insert_metadata': False,
 'isbn': None,
 'italicize_common_cases': True,
 'keep_ligatures': False,
 'language': None,
 'level1_toc': u'//h:h2',
 'level2_toc': u'//h:h3',
 'level3_toc': None,
 'line_height': 0.0,
 'linearize_tables': False,
 'margin_bottom': -1.0,
 'margin_left': -1.0,
 'margin_right': -1.0,
 'margin_top': -1.0,
 'markup_chapter_headings': True,
 'max_toc_links': 0,
 'minimum_line_height': 0.0,
 'mobi_file_type': u'old',
 'mobi_ignore_margins': False,
 'mobi_keep_original_images': False,
 'mobi_toc_at_start': False,
 'no_chapters_in_toc': False,
 'no_inline_navbars': False,
 'no_inline_toc': False,
 'output_profile': <calibre.customize.profiles.SonyReaderOutput object at 0x038B1990>,
 'page_breaks_before': u'/',
 'personal_doc': u'[PDOC]',
 'prefer_author_sort': False,
 'prefer_metadata_cover': False,
 'pretty_print': False,
 'pubdate': None,
 'publisher': None,
 'rating': None,
 'read_metadata_from_opf': u'C:\\DOCUME~1\\JackieS\\LOCALS~1\\Temp\\calibre_0.9.4_tmp_0imzrg\\tofxhd.opf',
 'remove_fake_margins': False,
 'remove_first_image': False,
 'remove_paragraph_spacing': False,
 'remove_paragraph_spacing_indent_size': 1.5,
 'renumber_headings': True,
 'replace_scene_breaks': u'',
 'search_replace': '[]',
 'series': None,
 'series_index': None,
 'share_not_sync': False,
 'smarten_punctuation': True,
 'sr1_replace': None,
 'sr1_search': None,
 'sr2_replace': None,
 'sr2_search': None,
 'sr3_replace': None,
 'sr3_search': None,
 'start_reading_at': None,
 'tags': None,
 'timestamp': None,
 'title': None,
 'title_sort': None,
 'toc_filter': None,
 'toc_threshold': 6,
 'toc_title': None,
 'unsmarten_punctuation': False,
 'unwrap_lines': True,
 'use_auto_toc': False,
 'verbose': 2}