I just started the 4th gallon of fuel.
No nitro, 18 % oil (added some more castor)
91 degrees, 53 % humidity
6400 rpm.
Flying an Ultra Hots, weight is 15 lbs.
Vertical is good but not unlimited.
I think I am about 800 to 1000 rpm low. thats a lot of ground to make up in the next few gallons.
I will try a Bambula 18/8 prop to get the rpm's up for a couple of flights.
I also have a Moki 20/10 prop on its way to me.
But so far my Moki 180 is better.
tonyc