I have this HELLCAT. Its a nice warbird, its built good with fabric covering on the wings and tail.
I`m using a OS-.91FX with pitts. and flys it good.
I do not have retracts, just fixed gear. It really needs retracts thought, this plane just crys out for retracts.
You should spray the whole plane with a flat clear coat before you fly it.
The gas and oil after a few flights soak into the paint and fabric covering at the tail area. I clean the plane after every flight, but after a while you cant remove it all. Just mist the plane with Top Flite flat clear and you will be set.
The Hellcat handles and tracks good in the air and ground.