I have a Tin Lizzie QM. We have a love/hate relationship. But, I ordered new Groz-Beckert needles same exact one as always and when they arrived these new ones were titanium coated. I thought --GREAT--will last longer. They do not work well in my TL. I have skipped stitches over an inch long. Went back to the chrom plated needles and all is fine. I use 134, DP X 5, 135 X 5, 135 X 7, 797, sy 1955, G. Have only found them in Denmark and it will take 20 days to get themhere. Does anyone have a source for these that they could share. I only have 3 chrom ones left.