Your curing method is missing a step.
After the buds feel kinda dry and the outer leaves are brittle, take it down off the hanging line and trim up your buds.
After trimming, you said you put the buds in a jar and "burp" them a coujple times a day.
Well - right there is where you missed a step.
After you trim the buds you need to lay them out again, preferably on a drying screen. Or you can put them in a brown paper bag.
If you don't do this then you are putting wet weed into a jar to ferment in its own escaping chlorophil, resulting in the turpenes degrading and having a more "hay-like" smell.
Check them every couple hours at first depending on how dry it is in your room, and turn them over on the screen (or in the bag) every so often.
Within a day or two of the second drying, the buds will feel completely dry... but they aren't still. Internally (stems, inner buds) they still have a tiny bit of moisture (and gasses), so this is when you put them in jars or sealed bags. What you want is for the tiny bit of internal moisture to come out and mingle with the drier pieces, making a perfect cure. Open a couple times a day to release any extra escaping gasses, and within a couple weeks to a month the buds should be slighty spongy & sticky and a HELLA STANKY DANKY smell should be fuming up your room like a skunk's butt!