Picked up our new 2015 Allegro 31 SA Feb. 20 drove it home 100 miles no problems. Parked it in our driveway took it for a drive Saturday March 14 for the first time since we brought it home. The engine has no power. It starts fine, idles perfect but when you step on the gas to go the engine revs just a little then falls back down to and idle. If you pump the accelerator you can get it to go but it takes a while. Once you finally do get it up to speed say 65 mph it runs fine. When you stop to take off again the only way you can get it going is easy on the accelerator until it dies out then start pumping. This is the Ford F53 chassis with the V-10 with 900 miles on it. The first thing I thought of was water in the fuel, I've put 8 bottles of Heet in it hasn't helped yet. Of course I can take it to Ford but I wanted to make sure it wasn't something simple first. Anybody have any ideas?