I hope all goes well with your install. However, I've read that some people have had quality control issues. Yours may be just fine, but if you do replace it, you may consider a higher tier PSU.
The vs550 is tier 4, it will fit the specification, but there may be better quality components in other options for a similar cost.
You can take a look at the sticky in the components main page for the different tiers and comments on them.