I've had a couple of Crazy Maxes. They are great flyers and more bangs for the buck than any model I have flown.

They do have a few quirks that need to be trimmed out in the first flight.

The wing can have too much positive incidence (it's too easy to build in either positive or negative incidence, which sounds like your problem), and a lot of down elevator trim is needed.

The building instructions can lead you to build it with too much negative incidence, so you might take a look at that.

Once trimmed properly it is an amazingly aerobatic aircraft, with the most incredible inverted spin you have ever seen!

Persist with it. It'll reward you in the end.

David C.