If you are someone who is getting these other spawns (& personally, I kinda LIKE re-using some resources for spawns, even if it can be sometimes frustrating as well) - see if you can work on those other storylines. I do this with Aspen Trees & Willow Trees & "bushes" (the more commonly reused ones). I try to plan to work them simultaneously!
May not always work, but the whole "lemons into lemonade" adage & all.