Sounds like you're using Type: Table which would not work for your case. You'll need to manually add a scraper for each line you want, e.g.
{"_id":"forum-centralbooksonline","startUrl":["https://www.centralbooksonline.com/boot-click-enter-class-1.html"],"selectors":[{"id":"Title","type":"SelectorText","parentSelectors":["_root"],"selector":"h1","multiple":false,"regex":"","delay":0},{"id":"SKU","type":"SelectorText","parentSelectors":["_root"],"selector":"tr th:contains('SKU') ~ td.data","multiple":false,"regex":"","delay":0},{"id":"Product Title","type":"SelectorText","parentSelectors":["_root"],"selector":"tr th:contains('Product Title') td.data","multiple":false,"regex":"","delay":0},{"id":"Board","type":"SelectorText","parentSelectors":["_root"],"selector":"tr th:contains('Board') ~ td.data","multiple":false,"regex":"","delay":0}]}