Thanks Matt, had another look and found the exhaust joiner had split. Replaced that and richened it up a tiny bit on the high speed needle and its back to running as well as it ever did and happy to climb out of sight. The weather wasn't really that hot only mid 20's celsius (or mid 70's farenheit). Still going to have a go at lengthening the exhaust and see if that helps but it was quite good to fly today.

Matt I've had trouble locating any of that ceramic sleeving you used in your joiners here in Australia, any chance I could buy some from you?

Cheers,

Dave