No need to buy a aluminum swashplate, just purchase a new plastic one, ELFH2416 and get yourself a spare stabilizer flybar, EFLH2219B. You can find them both on Ebay at reasonable prices. The 150 MaH lipo should give you approximately 6-7 minutes of flight time. Get youself a cheap digital kitchen timer. When your heli fell out of the air you reached LVC, low voltage cutoff. If you continue to wait that long, the battery will be ruined. A blue LED in the cabin of the MCX2 should blink when LVC is reached. Set the timer and fly.