I'm not sure what you mean.
I did some crude climb tests of the Mosquito when it was introduced, but given the fact that I've never found a good source for Mosquito climb rates I didn't really have anything to compare it too. Most books that mention a climb rate report it as 1,800ft per minute or 2,800ft per minute.
My computer had a major meltdown so I cannot test it right now.
Can you tell me what you are seeing?
Thanks.