no I haven't. tried denim needles and top stictching needles. So far nothing has worked. Am taking machine in tomorrow for overhaul and cleaning. I am really afraid it is going to come down to the batting. This is the first time I used something other than warm and natural. Am considering taking it to a long arm quilter to finish as I am under deadline to give as shower gift. maybe a more powerful machine is the answer, I really do appreciate all the nice people and helpful suggestions.