These things are sent to try us Doc.
I had a look for negative reviews on the FRX and couldnt really find any on forums other than cost and a little tricky to initially setup. (there could be forums i am not looking at). It is a little more finicky to setup than say a 1000 series due to the individual spring balancing system. Theres a couple of install and setup videos on youtube that may assist. I always find sometimes that it is best to step away for a day or two (on some of my builds months) to let the frustration disapate before having another crack.