I have a Takahashi EM-200. The FS-60 has the Takahashi clamshell and the mewlon 180 has a dovetail that has the two hole adapter that goes into the mount. I was looking at the Takahashi medium accessory mounting plate but I don't see how that will work. I could get rings for the fs-60 and put the mewlon on top but i wouldn't feel comfortable doing that. Any ideas?