Kyosho MP10, or Ultimate Racing Air-Max are about the best, and simplest you can buy, while still being super economical (which is paramount in nitro RC for obvious reasons).. A 12pack of replacement elements can be had for around $20.
Personally I’d send it back, and go with something more readily available, and with a solid track record. That Centro is a LOT of BS hanging off of your engine. When it pops off because of that, your engine is garbage..