Ok my stuff up the comment about more oil in fuel was directed at the guy who had overheating and poor idle with 15% oil mix.. O/heating can be put down to low oil, has happened often at my field likewise idleing. Last time I had this problem though was because of absolutely stuffed / rusted up bearings on my mates 65. I only use wooden props for the initial "run in" tank of fuel if ever the exception is my vintage XOAR props for WW1 models. They are great. Now the weather is great, the field 10 minutes away and a number of big models with even bigger Saitos to test and observe in operation. So enough of this as interesting as it is the wild blue yonder beckons