My Ko4 turbo is on its way out after the oil strainer blocked So it now needs a rebuild. So did a bit of searching on the web etc and found Turbo Dynamics. They seam to be the cheapest for a rebuild i have found starting at Â£195+ vat (cleaned, seals and bearings). Any one used them before? I spoke on the phone with a guy there, they sounded professional enough!! Thanks in advance!