Does your 2027 have top or bottom problems? Is it with all threads? I've found my 6230 hates certain thread. Also a few weeks ago I was throwing stiches with my Plaff serger and after racking my brain, and doing everything I could think of I changed the threads, (all 4 spools) and not tossed a stich since. Go figure it was the last trick up my sleeve before it was going to the DR. for a check up. :shock: :roll: