Thank you Phil for your detailed review.
I also bought the SAM and
made a review that I posted on the CloudyNights forum.
I agree with your conclusion but warn people expressely
NOT TO OVERTIGHT THE SADDLE LOCKING KNOB.
This is indeed a poorly designed part of the mount. The knob is screwed in the saddle to lock it on the RA shaft. Only two threads are used in the threaded hole. As the saddle material is quite soft (aluminium), the threads will break one day or one other. I hope Skywatcher will fix soon this mechanical non sense.
Here is a picture I took :
http://www.webastro.net/upload/image...1486655586.jpg
Therefore you shall be VERY carefull not to over tight this knob as you could easily destroy the fragile aluminum threads.
Fred