i made my draginslayer too big and now when my draginslayer loads in the result is a completely black screen, any fixes? if not, is there a way to edit the code/files to change it back to an acceptable size?

Sure! The black screen issue tends to happen when there is a +maxHealth mod on the item with a very high number. I'm going to assume you are on Windows, here is a tutorial on finding your save files:

How to access your saves and error log on Windows. - YouTube

Once you've found it, open it with notepad (it is a .json file, which is pretty easy for us humans to read) and delete your draginslayer, or reduce the value of its maxHealth modifier to something like 0 or 100.