What are you putting the heat issue down to Snowy? The only stage I've ever seen temp go higher than 110 in the 34 is Cethana, on the uphill side for 6 kays or so prior to the finish.
I'm also staggered by your consumption rate, we were getting around 80 competetive klm from a tank ($390! ) . For istance, Day 5 Targa, we'd refill after Strahan and then do Queenstown, sort transport, then Arrowsmith, short transport, and have around 1/4 left?
I'm wondering if the 98 rule is affecting consumption significantly? ie pouring more in a bid to keep power up? Interested to hear how Adam Poole compared to your consumption......