evolution rage 5 s table saw

I have a second hand Evolution Rage 5S table saw, and there is a problem with the blade catching the riving knife (see video in link below). Something seems to be misaligned but I can't figure out which bit, or whether it can be easily adjusted. Any help would be appreciated...

Hi there, Am hoping someone can help me I've just bought a table saw and it's performing brilliantly apart from one issue. The sawdust bag seems to be collecting the tiniest amount of sawdust, the rest is all.over my garage - and covering everything else. Ive checked the connections to and from...