Yanni Report post Posted November 23, 2017 We've got an Adler 269 at work. I get really good tension on forward stitching however on the reverse it bubbles up underneath as if the top thread is not pulling enough. I need to tighten up the top tension very high in order to get anywhere with the bottom but without perfect results. What am I doing wrong? Thanks Quote Share this post Link to post Share on other sites