...Thanks Bob, It is the parts that i thought but i just didn't have the confidence to go ahead and loosen the bolts. The brackets are called 'Rotation press blocks' which to me gives no hint of what they are.
This is the most expensive woodworking machinery I have ever bought and at close to £950 I would have thought there would have been a better instruction manual with it. According to the SIP tech support there is no way of adjusting or aligning the mitre slot to the blade as this should already be factory set. The only other thing I was concerned with was would my saw run of a 13 amp supply as some other forum members said theirs needed 15 amp,mine runs well of 13 amp.
Apart from the issue with the mitre slot I'm otherwise very happy with the saw.
..Again thanks Bob for your help and diagram, 'much appreciated. P.