It may well be both the CEO and Chairman of HRV made reference to integrity issues surrounding the events from Thursday through to last night rather than legalities of sulky dimensions teecee but I'm not sure there isn't a concern with over dimension (width) sulkies and fair racing. If we're talking about the extreme outer dimension of a sulky it's cut and dried? One of the drawbacks of the USA style sulkies, adopted for use here, is the reduced 'lift'. One way of increasing lift is to bring the driver closer to the horse where you can run into trouble with hooves striking the struts or wheels. If rectifying that means the outer dimensions of the sulky are outside HRA specs, end of story? Alternatively extending the shafts, modified lengthwise/shaft extensions to give hoof clearance, will have a detrimental effect on lift but keeps the sulky in specs. Certainly not suggesting any participant would consciously use an over dimension width sulky but there could be an advantage considering our racing style and size of tracks. We race on half mile tracks with tighter racing than North America. A horse with a correct sulky could be blocked for a run either to the inside or outside of an over dimension sulky.