If you slew over to
http://www.lxd55.com or
http://www.lxd75.com You may get an idea on the mount. It is my understanding that Meade had quite a few problems with the LXD55 mount, so they bought out the LXD75 which is far better. The LXD75 is a better mount than the LXD55. I have thought about getting an AR-6 OTA and placing it on an EQ6 mount. Anyway hope this helps a bit.