Yep, I'm not arguing...I'm not saying that the ZDZ40RV is the ultimate solution...the OS 1.60 might be better if it can be made to balance.

Some of the weights I posted were taken from specs and not actual measurements...and I figured a 12 oz tank for the ZDZ.

A 10 oz difference between flying weights starts to become a pretty big deal. But if you need to relocate all three servos to the front and STILL add noseweight the ZDZ becomes more attractive. I prefer my elevator servos in the rear and my rudder servo up front on pull-pulls. What about using digital minis for the elevators...could reduce the amount of nose weight (if required) with the OS 1.60.

I will beg my neighbor to let me borrow his OS to see if the plane can be balanced with it. If so, maybe I'll beg him a little more and see how it flies with the OS before mounting up the ZDZ. Who knows...I may not use the ZDZ after all!

Decisions decisions...

-Tom