Dlan, it is always good to go with the kit recomendations. The down thrust gives a bit more prop wash over the wings and also gives a slight tug down on the nose. The Right thust reduced the tendcy to yank left when you accelerate for take off. Notice I said reduces it. I am flying a Mag 91 FS in a 4*60, and if you punch it taking off, you are going to end up going off the left side of the runway. If you ease on the throttle, you suddenly find youself flying. The 4* usese 0 and 0 for thrust but every bird is different. 1 and 1 isn't much, but I would still build to the kit.

One of the guys at the field built an "old" scale kit which called for 7R and 4 down. He has a lot of experience building models as well as full sized and he decided to go 0 and 0. He almost lost it on the first flight. Now he has the 7 and 4. looks funny, but it sure does fly good like that.

Don