I am new to the longarm quilting also and I purchased a Baileys Pro 15 off craigslist with a frame at a really reasonable price. When I first started it up I was haveing the issue of the nesting underneath and it was a tension adjustment that fixed mine. But then one of the sensors was bad and had to wait for that to come in. It finally did and now I have an issue with the needle gettin jammed in the down position. It does fine in the beginning then all of a sudden it just the needle jams in the down position and I have t remove the whole bobbin assembly to release it. I have changed the needles plus broke a few. The needles I am using is what came with it. The manual I have does not specify what size needle. Can anyone help. I have tried I think eveything. But Im new to this longarm stuff so I might be missing someing. Thanks and sorry for long post.