Mine is pretty much the same Mike (but sometimes even when warm may be a trifle sluggish to turn over, however always starts).
Positive jump lead direct from the the battery to the starter will power the starter - be prepared! If you get fast turnover by doing that, then there is a problem with the feed to the starter somewhere. If the cranking is slow it points to your starter motor...
Do you have a battery isolator (big red key)? That's where I normally collect my jump lead.
Cheers,
