1. 2. You will need to reprogram the ESC. Check
here for instructions. Also be sure to try reversing the throttle channel, as that could cause the ESC to not be programmed properly.
3. That's normal. It does that because the capacitors charge up very fast.
BTW, where is Seaside?
SH Z-Car, Custom Crawler, 8s Savage,
12s XTM XLB 1/7 buggy,
4wd 4-link rear/IFS Pro4 truck,
Custom Hyper 10 Short Course,
Belt-Drive Mammoth ST 1/8 truggy, 4s 17.5 MM Pro HPI Blitz