I have an old baby lock serger, and I used a label maker and labeled the top against corresponding threads 1-4 to remind me to thread in correct sequence, as long as you follow sequence it's a two minute job to rethread. When I tied the threads on they always snapped or came undone at last minute and was more frustrating. Just ordered the Juki with air threading, waiting on it arriving should be in next day or two will let you know how it goes, reviews are great.