Hi everybody, newbie here. Great site! I have a 29k58 that sews pretty good. The other day I noticed the thread tension post on top is being cut into by the thread I am using. I looked and the wire thread guide and the check lever are also being cut. I have been using coats upholstery thread, 100% bonded nylon, from a local store. Size says T 26. Is this thread wrong for this old machine, or do I need to use oil in the lube cup? Would polyester thread be less abrasive? Any ideas will be appreciated.
Thanks, Kelly