Stewart re the puller.. does the wiper arm cap fold back exposing a ring that slides on the wiper splines or is it just a rigid cap that is simply pulled off? If its a pull off cap then the puller has no spindle centre to push against (like a hub puller). Perhaps it may help grip though? Just thought on leaving wipers on, are the blades resting on the scuttle paintwork or floating unsupported? I personally take the wipers off, but mine are removed with a centre screw that tensions an ally wedge on the splines, so there are clearly different systems, the screw type may be available somewhere.
