Yes, manual positioning works. Hope you are putting code in the right place.
Anyway, for Manually positioning the Social Sharing Buttons in your blog, place the given code in the index.php file or any other file as you see appropriate in themes folder (...\wordpress\wp-content\themes). Note: if you are using 'default' theme for the WordPress plugin, then place the code in 'single.php'.
After placing the code you have to follow these steps.
A.Load the admin page for the plugin "Social Discussions"located under - Admin Console > Settings > Social Discussions.
B.Expand the section for "Social Buttons".
C.Under "Select Style", select the appropriate style for which you got the code from above. Style 1 is - Social Sharing Buttons with Counters, Style 2 is - Social Sharing Buttons without Counters, Style 3 is - Social Sharing Icons, and Style 4 is - Social Sharing Icon.
D.Check the box under the "Show/Hide this Style" and submit by clicking on "Save Changes".