Engineering Skill Level Fluctuation

Yesterday my engineering skill for making Complicated Cuffs was 354 and today it is 277. This is not the first time this has happened to me. Has anyone else had this issue?

The Professions UI can be a bit misleading because it factors in what mats you have available. You get bonus skill added on up to 25% of the recipe difficulty if you use all tier 3 mats, and it shows that without saying it is showing it.

Most likely you had some tier 3 mats in your bags yesterday but used them up and so lost +77 mats bonus.

Thanks, that makes sense. I’ll check that.