Nissan Navara D22 Roof Rack issue

I have recently fitted a roof rack system to my 2006 navara (D22). I purchased the reputable system from a large reputable 4WD accessory dealer and had it fitted to the vehicle by that dealer. It has only been fitted for three weeks and in that time we have travelled along the WA coast. I did some off roading but nothing too extreme and only had a spare wheel (secured by the roof rack companies own spare wheel bracket), a fishing rod holder and two camping chairs, so not much weight at all.

Upon taking the car back to the dealer about a seperate issue the dealer noticed a crack along in the roof where the roof rack foot meets the track. The dealer and the supplier have agreed to pay for the damage but now we are faced with the decision of whether or not we have the roof rack re-fitted.

Having the roof rack has its own pro's in itself, especially for a dual cab, but we have posed the question to the dealer if it is worth re-fitting it after the crack is repaired. ie will it be a re-occurring issue, especially if that area is now already weakened by the repair work. We were carrying next to no weight, well below the manufactures standard and had good ideas about how to configure our load in future trips.

Has anyone had the same problems and how did you go about fixing it. Can an extra support bracket be fitted to the roof to strengthen the roof rack or is it better to count our losses and go without or is there something we can do. The dealer and the manufacturer are also looking into the situation but any additional independant advice would be appreciated.