Rear mount installation: this is what worked for me:
All the following bolts loose-ish at first to allow movement...
1. Rear mount on bottom stud first.
2. Engine bolt.
3. Hidden bolt into gearbox.
4. Top of brace onto top stud.
5. Put jack under central metal arm of mount to support and raise the mount to the point where you can put the brace bottom bolt through the bottom of the brace and into its hole. Note: I struggled a bit to get the brace bottom bolt through the brace hole and into the mount, not much tolerance, but it does go eventually after fiddling around getting the mount to just the right height etc. This is where the fine control you get with the Fiat jack comes into it's own, you just turn the adjustment wheel and the height can be controlled to a fraction of a mm. I think it's great.
6. Tighten up all the above bolts firm but not fully torqued up.
7. Raise the jack further to push the rear support all the way up to the subframe (Note: the jack is still under the solid metal arm of the mount). After fully raising the rear mount, the 13mm bolt holes in the rear support aligned - in my case - perfectly over the holes in the subframe. But, I notice that the 13mm holes in the rear support are much bigger than the bolt diameter, my guess is that this is deliberate to make insertion of the 13mm rear bolts easier/give you some leeway when fitting.
8. Insert and tighten the 2 x 13mm bolts.
9. Torque everything up.
Worked for me! Took me a long time first time round, which is the problem isn't it, when you do anything first time, working out what to do, it takes ages. But once I'd sussed what to do, reckon I/you could do the rear mount fitting in 15 mins next time
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Note: On rear mount removal, I didn't disassemble the rear support at all, didn't touch the central, vertical bolt, just left the whole rear mount together in one piece when I removed it.
