Janny, I just experimented on a quilt for my dad:))Poor guy:))I found the faster I went, the tighter the stitches...slower made larger. Try this out on your practice piece and see if I am right. Machines do have regulators you can buy...but, I keep putting my money in more fabric instead:))If you can notice an obv. difference in the stitches by speed...then you know where to work....you feet:))LOL That is just a suggestion other then 'breathe'!!:))And, relax...Skeat