Instruction manual 35% aeroworks yak 55
#2

I have the 35% yak 55 too - the manual states cog is 3.75" -4" from the leading edge at the wing tip.
I balanced mine at rhe chord where the wing tube is located and required no trim at all in flight.
Have manual pdf if you need it sent to you
I balanced mine at rhe chord where the wing tube is located and required no trim at all in flight.
Have manual pdf if you need it sent to you