Try loading your tobacco into one of your spare trusty green GH tins. After a couple of days you’ll get those flavours alongside the mentholI thought I could detect the notes of moss and mildew, but sadly I could not.
This is really the key for me. Dry it out and don't try to stuff the bowl, just plop a little haystack in there. Last night I dried some baccy out around 42% RH for several hours before smoking and it was perfect. Easy little sips made big clouds. Dryer and looser is the way to go.Pack looser and make sure your tobacco is not too wet.