tail servo horn length w/vbar

[vanillagorilla]

I'm using the 4-horn black futaba horn on a bls251, about 3deg pitch on tail blades at center, leaving 4mm gap towards tail box per Matt......vbar tail endpoints aren't coming out right....what is you measurement from servo horn center to ball? 

Thanks

[stevehof]

That's the horn most are using with Futaba servos. Use the outermost hole and you'll be fine with Vbar...