Has anyone used the Goetia Pathworking method with unlisted powers and saw results?
Many of the Goetia demons’ powers are missing from the book and I was wondering if that system could be effective for working with unlisted powers.
The author addresses this question in the book but I am more after hands-on experience.
Always. They all do more than we think… but whether they agree to is more a matter of your energetic synergy with them, meaning it’s personal.
Your ideal approach would be to develop your telepathic skills aka astral senses so you can have a conversation with the entities, they will tell you what they will and won’t do - for YOU - if you ask.
That book has helped me successfully find lost things. Also, I see no problem in asking for something that falls within the nature of the entities. Lastly, I believe all of them are powerful and capable of achieving many things. The difference in your results lies in the depth of your relationship with the entity and the affinity it has for the type of work you’re asking it to do.
Vassago just helped me out. I lost my phone, called Vassago, and in 3 weeks I found not just my phone, but 4 other things I’d lost as well, which was everything I was missing. Color me impressed. 
That’s amazing but finding a lost object is listed in Vassago’s powers in the book.
You’re good, don’t be afraid to just TRY and find out. You’ll gain experience, confidence and contribute to developing your senses, you don’t need to wait for people to tell you it’s ok, and there’s no substitute for finding out yourself.
Yes. The powers listed in such books are often only those that the author has had personal experience with, and not necessary the limits of what the spirit is capable of.
Personally, I have worked with King Asmodeus, and he has often helped me with mental clarity and focus, where the lesser key only mentions math and the location of treasures.