adde687...don't go with a .70 anything would be my opinion. Saito .91 or O.S. .91 even Saito 1.00. The Saitos tend to be a little lighter than the O.S., but that has never been a concern to me. A .70 is a good choice for my light weight Twist but not for a heavier, thick winged UCD .46.

kokamo...really nice job... I see you put a bust of yourself in the pilot's seat. It looks like a professionally sponsored air show plane. You might want to keep an eye on your long needle shaft, sometimes it gets to vibrating really bad with a 4 cycle and can mess up your threads.

perkinsm...right on with the O.S. .91, but a 14x6 is a better choice according to our local club tail touching expert who flies with an O.S. .91. Let me know what you think if you try it.

Today is a great flying day here in PA. I'm going to give my Twist some fresh air.

Regards, FRED