Is Vee-Tail Differential helpful on a Monarch C?

Good question, and yes, differential makes a world of difference on the C. I use a percentage of differential that works out to this-- if the total travel of the ruddervator = 100%, use 40% up and 60% down. Use that as a starting point and tweak it to suit YOUR handling preference.

You will notice an immediate, WONDERFUL difference in handling. I wish I could help you with your Vision tx, but I've never owned one--I use a JR 347---SORRY!

Bob, please let us know if you have any other questions, etc.

Thanks
Joe