I found this problem myself with the Canon Mk 5 . If you can find some thin gauge nylon cord that you can pass through the mount points and tied to the loop they can then be pulled through. Hope this helps.
By R C. on 28 December 2014
hi there, I bought this strap about 9 months ago and could not be more pleased with it, I use it to carry my canon eos7d with battery grip attached, and a 70-200mm f4 lens + sometimes a 580 mk II flash don't be put off buying it will hold at most about 5 kilos in weight. john.
By john f docherty on 19 July 2014