You won't need a swash leveler.
There is holes in the frame you can slide a screwdriver into and this will give you a level swash.
The links are a fixed length.
Then just tighten the grub screw and screw on the side of the servo arms provided with the kit.
So in your vbar you will need zero subtrim to get a level swash.
Also if you don't already know here are swash settings you will need to enter.
ch1 270* 72 distance
ch2 135* 100 distance
ch3 45* 100 distance
ch4 0* 0 distance
If you need a vbar file for the E720 im pressuming send me a pm with your email and i can send you my file.
Thunder Tiger , Rail Blades, Byron Fuels, Gens Ace, Scorpion, Lynx