i have a rimfire brushless motor on my flatana and have only flown it once with the rimfire on it but many times with the stock mototr. earlier today i was gonna fly it and plugged in the fully charged battery(3 cell 640 mah from electrifly)to the esc (Bl-8) and then i gave it a little bit of throttle to power it up .. then after like 2 seconds of low power i gave it full power (while holding the plane) and it went to full throttle for 5 seconds or so then it started to slow down with out me moving the stick. it started slowing down until the power got to where it wouldnt even hover and then i put the stick back to full off for the motor and them full throttle then it did it again and it slowly went back down.Iam running a 10x3.5 prop on it so i thought of putting a smaller prop on it but that didnt help very much either it just took a lil bit longer for the plane to lose power but nonethe less the plane still lost pwer can someone help me.//???do i need to just return the bl8 esc and get an esc that can handle mor amps like 12 or 15???