If it is the size of the large spools / cones available from Connecting Threads like this
http://www.connectingthreads.com/thr...__L600905.html
mine works perfectly well on the thread pin but I put a skinny spool like a sulky on it first and fit the large opened cone on top of it ,,
voila nothing special. Oh and I put a piece of flannel with hole in it on the thread pin under the spools of thread. I do that for all my spools no matter the size, it seems to make the spool spin better.