From my understanding, Dro in this situation is slang for high quality weed.

If you mean it is too sticky or too wet, just roll it up looser and not so tight. If it's nice and sticky and rolled right, it will burn nice and slow.

Any weed can burn in a joint. You just have to know how to roll one up when it comes to the "feel" of the bud. Wet and sticky, roll up looser, dryish and kind not so great, roll up tighter.