Maidened Do #4, it was perfect, no trim needed, it flew just like #3. I immediately started with the 3-D routine I was used to with the last one, after one or 2 things up higher to be sure all was right, I brought it down on the deck. Couldn't ask for a better weekend and with a little "huck'in", it was perfect. The only thing I might do is take out some up thrust, I put a washer or 2 in, but I had to feed in a lot of down while hovering. Now I have to get my DV finished, but in the mean time, I can get by with the Do and Velox.