Well, today I went flying while it had been drizzling this morning. So the field was wet, without puddles though. I can now state as a fact that the 90 needs some speed to get of the field, and when it is wet, it will not get in the air! The first attempt I stopped, the second attempt I pushed on, and ended full speed in the ditch which is around our field.
I've had a similar experience with the .50 on a really wet field. It seemed to have the speed, but just wouldn't get off the ground. Also ditched it on the second attempt, but not full speed. No damage. After this I lowered the entire landing gear like a cm and since it had no problems getting out of the puddles anymore. Dont know if this will go or is even possible on a .90 tho. My .50 was nose heavy as well.
@murdoc
damage is never nice.. good side is that it can be repaired and that, in basis, you bought/built yourself a plane you're going to like to fly, you already did