Now that I have the (night) time available to me, I recently purchased my first telescope (SW Mak127 with AZ GTi mount). Even as a newbie, upon assembling the scope, my first impression was that the method of attaching the OTA to the AZ GTi mount was the least satisfactory part of the kit; being a cheap looking plastic topped screw, it didn't instil me with confidence and immediately scarred the green alloy finish on the OTA's dovetail bar
Suffice to say, there are no such concerns with the ADM adaptor and I really wish I'd purchased it alongside my original order for the SW Mak127.
The ADM adaptor really looks the part, exuding as it does an air of quality engineering and clamping down on the OTA's dovetail in such a way that you know it ain't going anywhere.
Points to note are that the metal disc supplied is now black. Also, as other have stated, the installation is very simple indeed and should take you no more than ten minutes to complete. What took longest for me was locating the appropriate Allen key, which is neither 4mm nor 5mm but some weird imperial size betwixt those two.

The standard saddle is a bit small and the screw on the saddle marks your dovetail bar as it is the only part in contact with the dovetail bar.
This simple replacement/upgraded saddle from ADM increases the length of the saddle and grips using the whole surface area rather than just the screw head!

The upgrade takes less than 10 minutes to install, see my post on SGL for pictures of the steps needed:
https://stargazerslounge.com/topic/332111-skywatcher-az-gti-with-adm-dual-dovetail-adaptor-installed/

If your scope was expensive then this upgrade is just for you!
Alan

This is a fantastic piece of kit and I would recommend that every AZGTi owner upgrades to this.

Very easy to fit, takes 5 minutes, and you only need a Phillips head screwdriver and an Imperial allen key.

The slowest part of the inmstallation is the careful removal of the plastic cap that covers the 4 screws holding the original saddle.