drc9723 Report post Posted June 20, 2020 (edited) I'm curious if anyone has tried to install the larger bobbin from a 31K20 into a 31K15 machine. From looking through parts manuals, would I be correct in saying that all you'd need to do is install the complete shuttle race (#24325) and shuttle assembly (#20758) from the 20 into the 15? Thanks in advance Edited June 20, 2020 by drc9723 Quote Share this post Link to post Share on other sites