I dunno if other crafters have this problem, as my cooking is almost gm. I literally used 4000 leather without a single gain at 61.5 I used another 1000 and still, no gain... I am not even at 700 skill point max either.
I got a 120 tailor, took me many days to finish; you are actually better off just buying the leather at 2gp each. I was very frustrated with my tailoring. If you want advice on getting bulk leather fast, my best advice is to go to dungeons where tamers go to and just skin their kills; you get leather quickly. Sometimes I ask the tamer if they will party with me, many of them do since tamers are often vulnerable to pkers and like to have a skinner around in case one shows up.
I think crafting here in general is extremely tough as far as the dedication it requires to pull even just GM let alone 100+ and i personal am really enjoying the crafting community here feels like everyone who is gm or legendary really bands together. My advice is start chatting with other crafters and it will at least become less tedious because the person you are talking to totally feels the grind lol
I think this thread had died the death it deserved, but I love the fact that very few people put forth the effort to have one of every crafter, and be self sufficient due to the fact that there is a heavy cost... It helps create a community where you have to rely on one another, buy from one another, and generally is the way it was meant to be..
You're doing something wrong. Either making something with no chance to gain, make something that takes too much material so you had almost no skill uses in that time, have tailoring arrow set down, or you didn't use 4k+ leather, that's just not possible.