Make sure the Vcan is hooked up, Fire it up, immediately get the Rs up to 2000, then immediately advance the timing until the rpm no longer increases, and back off a smidge. Then reset the speed to 2500. Do this as quickly as you can, but don't panic.Do not worry about the actual timing number; at this point only you care. Then continue the break in, varying the rpms as others have said; watching for leaks (especially fuel), and overheat. Afterwards ....... you can reset the base timing