i just received a 430 that i bought off of Amazon from a 3rd party reseller. he stated that it was a used item but in mint condition having only been used a few times. his packaging is great and the unit looks fine so i'm inclined to believe him, but i'm just wondering if the joint around where the flash pivots is supposed to have a little give (it wobbles if i gently move the upper and lower parts in 2 diff directions). ok, thanks.