Ray, so there isn't a small tension adj screw on the bobbin holder "thingy"?
Hunt'nFish
On my husky I have not been able to see one. Its a home grade machine and the bobbins are plastic. There is no screw visible down in the bobbin holder system. The owner's manual contains no reference to adjusting bobbin tension on this model other than to say its pre set. However, there is bound to be something hidden in there that could be adjusted. I just have to ask the right person at the shop.