Yeah Thanx mate 
I watched this vid a long time ago when researching the 690`s and racks etc ,,,
My original tank bolts get checked about every 3 months and guess what,,,, No sign of any movement, slack or fatigue… they are one of the first items I checked on the bike on pickup (MickP`s advice actually)
I realise that it could happen one day and if I was lugging heaps of gear and fuel like in a Simpson Crossing or something, I would have changed them ages ago justin 
In my old job I had acess to guys that could have knocked a set of those out no worries,, no such luck currently
:S
My Touratech racks have the double leg supports to the peg mounts and as such help support the rear end a lot more than the single leg KTM design also !!!
I continue to monitor for now, but both upper & lower bolts are definately on the list for changeout one day 
Cheers