So I found these two mod I really like called (Lovers Lab link, NSFW) Just Bigger Trees and Some Trees. Combining these two mods makes for a much more diverse landscape. However I know that swapping out meshes has a nasty tendency to break precombines. What would be the right way of fixing this? I'm assuming I would need to create a custom .esp and somehow load those meshes into them, then open the creation kit and run a 1-25 day long calculation to fix the entire commonwealth, but I'm willing to do that. I just don't know how to actually go about doing the first step, or if that's even the right process at all. Would anyone have some sage wisdom on the right way to fix this issue? Thanks in advance for your help.