I don't understand the relationship between the weight of the nose with an oversized engine and the quality of the plane itself.
I put a .46 in mine and have had no issues with it being nose heavy.
Well the issue of using an engine larger than the plane specs call for is a mood point (as proven in many forums here in RCU)
I fly high speed prop planes and scale model war birds and most ALL of them are over powered like a p-47 that calls for a 90 4 stroke and has a 1.20 4stroke installed the important thing to look at is the weight of the motor. The Magnum .51 weighs 15.7oz where the .46 2 strokes weigh: Magnum 2 stroke .46 16oz, O.S. max .46 17.2
Even the Super tigre .40 weighs 19.1
So the fact that a model calls for a .40-.46 is nonesense to try to say a model will only take engines in those sizes is also BULL when it really should reflect the engine weight.
UNCLE, IF others are using .46 2 strokes with no problems your engine chioce should be fine, your engine falls in the same weight class in not lighter! So the defect is either in the manufacture of the model or its classification of being a .40-46 size model is very misleading.