I Never do this, but I know how helpful these sites can be when you are desperate, so.......I have an HQ Avante and have had my share of tension issues. I'm not new to longarming, but have Never had so many problems! Fortunately, I have a very committed dealer who is enormously helpful. I've tried it all and here is what works for me the best.....,There is a Lot of space on that little screw on the bobbin case where you are able to make the bobbin stand in your hand and have the thread come out of the case. So--start from the tight end. This is how I do it---First, load the bobbin into the case making sure the bobbin is turning clockwise in the case. I tighten the screw on the bobbin case until I am unable to pull the thread out when pulling on the tail. Then I loosen the screw ever so slightly while testing the thread. I stop loosening the screw As Soon As the thread pulls through evenly (without bouncing the bobbin case) and the bobbin stays upright on it's edge. If you do this test from the point when the bobbin is loose, you will make this adjustment when the thread is way too loose. Start from the tightest point and then loosen from there--Not from the loosest point and tightening. Once you've got the bobbin adjusted, quilt a practice piece and adjust the top tension so that there are no railroad tracks on top and no eyelashes on the bottom. Basically, you want to adjust your bobbin tension from the tight side down and not the loose side up.
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