Hi Johnathon, I'm Keith from Cornwall. Try calling Axminster Power Tools and asking for Darren Peach, or email darren.peach@axminster.co.uk . They have Just started to sell these saws and Darren has one of each EX16, EX21, and EX30 all set up in a room to play with so he can learn all the inns and outs of the machines and all the set up procedures. I had similar trouble to you but mine was with the ordinary on off switch, it knocked and juddered when starting then after that it vibrated badly over 1/2 speed, but as my machine was only 2 weeks old they exchanged it for a brand new one and set up all the adjustments for me in his workspace. he was going to keep my old one to look at it and find the problem. The maintenance section will be shut down till 2nd or third of Jan then normal hours will resume. Hope this is of some help.