I think there's a bug with the Arado on take off. If you put her to full power and let her roll, you'll shortly loose the right, then after that the left engine. I noticed its possible to avoid this by holding the stick back about 1/4-1/3 of the way. I also tried to slowly raise the throttle as she started rolling, but it didn't seem to make much of a difference if I wasn't pulling back on the stick. Also, when the wings come off, the ord stays on:
(sorry for the crappy pic, photoshop is being a pain at the moment)
Also, the landing gear on the F6F shows throught the wing at the end of retracting and the start of extending. I noticed this last version, but didn't see it mentioned in the updates to 37, so it's probably still there.