The PT 40 trainer that I built (first plane) had a tendency to go nose up. A friend at the field added some weight on the nose and it flew better.
However, it was still going nose up andanother guy considered as the best at that field just took a quick look and told me that I had a positive incidence
which cause the air to flow over the stab and cause the nose-up tendency.
He recommended I put a little foam on the back of the saddle so the wing would be inclined more forward.

Is it possible to note a positive incidence by just looking?

Should I follow this guy's advise?

Thanks,

Harry
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