This message was posted by Greenwing on AmayaUsers.com. PLEASE DO NOT REPLY VIA EMAIL. Instead, respond to the thread on the WEBSITE by clicking here: http://www.amayausers.com/boards/ultimatebb.php?/topic/2/1092.html#000008 Juli I would look at everything else your using if it is the same box of bobbins. Like top thread and backing and Sprays are you using anything different? I have gone through 5 boxes of Magnacores and have yet to have Any build up. that would be 500 bobbins, I had to clean the case every ten or so with cardboard sided Coats. and mine were from old stock I had on hand since they first came out. Though you are in Hawaii it may be humidity, Though we have an abundance in the summer Here in Minnesota... =========================================================== The AmayaUsers Mailing List Website: http://www.amayausers.com Discussion Board: http://www.amayausers.com/boards Subscribe/Unsubscribe: http://www.amayausers.com/list ===========================================================