I do...
Whats up?
i had the same problem with one of my loops at the back of the pouches when i tried to fit the waist/chest strp through it wouldnt fit luckily for me it was on the male side so i just took the buckle off the webbing fitted the webbing through the loop then put the buckle back on, seeing as you cant do this with the female buckle and its probably a case of manufacturing,can you not swap the pouches round and use the male one on the loop that doesnt fit,then you can do as i mentioned earlier?
i dont know nothing about sabres, but cant you take the male buckle right off, and then thread the whole lot from one side?
Sorry shewie didnt realise it was three out of the four, rather than undo and restitch the three would it be better to unpick the bit fastening the buckle adjuster on the female side,then thread it through you can always double the strap back over buckle to lock it in place when securing, i know its not great, but unless you send them back and hope the next lot fit better cant think of anything else.