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Im trying to make a part like a tentacle . I want the profile of the circle to get gradually smaller along the path.swept boss worked well however it wont allow me to make the circle profile gradually smaller.

Lofted boss allowed me to make the profile gradually smaller however its warped.I also tried lofted boss along a path but the same warping happened and made the part look a bit flat.I am not sure how to make a twisted tentacle shape.I tried making planes at the same angles as the swept boss , this didnt work either