I am building a p90,a couple of months into the project.Every since I started,I have been trying to find information about this plane,as the instructions leave a lot to the builder to figure out.This will be the largest plane that I have built,having only done 40 size planes,and that was in 1989.Have'nt flown since then.After finding this site this morning and reading the posts,most of the questions I had are answered.I was concerned as to wheather standard servoes would have what it takes to handle the rudder and elevator.I bought some coreless ball bearing Futabas in the 60 oz. range for that.I was not sure about the one servo for the alierons,and you guys have convinced me to go with two.I will be useing a OS 108 FSR for power and hope that will be enough.I never thought about useing a gas engine.So,what in the end,I have no questions,as they have all been answered.Thanks.By the way,I bought a Fiberglass Specialties cowl for my p90 and it looks great.Should start covering next week.Thanks much guys,and as I have always known,you meet the best people at the flying field.