u/Cute_Escape8171

so for starters ive replaced the top right propeller bc it broke and after that i started flying like usual but it made this horrible noise and the second problem is after i reach around 3.70v it starts to slowly descent and when i try to take off again it just bounces up and down but if i leave it for a couple of seconds it can take off again. so im just wondering if anyone can help me thx