Nissan Navara Towbar Recall

Hi everyone, I recently posted on this forum about my concerns regarding light weight vehicles towing heavy weights ie....3000 to 3500KG in particular vehicles like my 2008 dual cab Navara 4X4 3000kg towball down weight 300KG. I made reference to vehicles like the Colorado & others, wondering if we will ever hear about someone following up on these vehicles capabilities & how the vehicle stood up to the task structurally, I mean over time damage caused to structural components. I wish to report that I have discovered a fault with my Navara earlier this year. There were some cracks in the chassis & as a friend of mine pointed out on viewing the chassis rails & the towbar fitment..."This is a joke"Well I took his advice & did something about it having the ends of the chassis rails welded & bracing plates fitted from the towbar onto the chassis. I also fitted three large bolts into the holes on the towbar that obviously had nothing there. On or about the 12th April 2013 I received a notice stating an Australian recall was in vogue regarding 2005 onward built Navaras. There is a fault with the fitment of these bars which even covered non Nissan authorised parts too. After spending a great deal of money prior to receiving this notice I was a bit "miffed" to say the least. I attended my local Nissan dealer after taking photos of the work I had done. I had a new towbar fitted with bolts & supporting plates from bar onto chassis . I had to hand over the Nissan tow sleeve but was allowed to keep the ball!! I just wonder how many people have had similar problems. Paid for the repair & now have decided to ask Nissan for a refund for fixing up a stuff up through no fault of the owners!!!! I wonder if this is the only point of conjecture with this towing "Mess" from Nissan?. I wonder if there have been accidents,vehicle & or Caravan/trailers damaged due to this accessory failure.