It's better. Not by a huge amount but it'll now go through some leathers which it didn't before.
I've some alligator skin look leather which is soft and about 1mm thick. Previously I could get through 2 layers of that. The new 80/12 leather needle punched through 5 layers before getting stuck.
The green leather you gave me I couldn't even get through 1 layer previously. 2 seems to be its limit, having to use speed to slice through.
The stitches are still very._._._.shaped. Schmetz made.
Going through 80/12, 90/14 & 100/16.
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I sewed the first line twice by accident.