RE: rcv120 sp
I have a 120 sp in a p 6 e hawk , a tail dragger , and I have a small cardbord box that I sit the tail wheel on just to make the fuse level for starting . These engines really do like to be very rich to start and idle the lowest when they are rich . I use muffler pressure into the tank , a line out to the carb and a third to fuel and defuel . I use coolpower 10% and it runs well .