I have a HQ16 and am having a lot of trouble with quilting straight lines. I have the ruler base but it does not sit even with the needle plate (needle plate is at least 1/8" higher), causing ruler work to be inconsistent and bumpy looking. I do not have the pro-stitcher but would love to be able to find some sort of guide/attachment to make consistent straight lines perfectly. I have seen one somewhere but cannot remember where (of course). Anyone have any links or suggestions? I am not sure how the ruler base can be adjusted (if possible) to fit the machine better, kind of disappointing really.