PVB, on Weds Jan 9th wrote:
Got the strap on the shoulder of the chest and back done, then tried it on to see how tight the strap had to be, which was like this:

Due to my funny shape, you can see how tight I have to have that side, so I might trim the top end of the back section, to allow the strap/buckle a bit more room to move.

I had trouble putting the armour on by myself, so asked my sister to assist me tomorrow, to help with the 'final' fitting.
Tonight I decided to try it on my own, but leaving the shoulders undone, so I could make sure the back and chest fitted together correctly now that there's a buckle on each shoulder.
Once I'd taken the armour off, I kept the straps at the same length and put it together:
(please excuse the use of sheepie slippers for filling/ballast to hold the armour in shape

)
as you can see both shoulder areas of the back and chest sections are very close together.
This causes a problem with the main shoulder parts when in the correct position:
when the front section is clipped to the grenade straps, there's still a lot of bending stress at the top.
The elastic at the back just means that the whole shoulder section can pivot forwards, which just causes more stress where the loop on the shoulder attaches to the back/chest strap:
I'm going to have to adjust the placement of the strap slots on the back and/or move the rivets holding the elastic onto the shoulder further up the shoulder part, so that the whole shoulder section sits further back and lower to the top of the back/chest sections.
