I'm all electric so can offer no help with the truck, but...
As this is quite a specific question can I suggest you post in the nitro section (further up) as well as possibly the specific manufacturers bit and use the title "help needed starting nitro truck" as that will more likely get folks who can help to spot the question?
My experience of Oople is that many on here are electric rather than nitro so you need to give yourself the best chance of getting assistance.
I hope that helps you get the help you need, but if it doesn't, come back so we can advise you to get an electric one. Modern LiPos are really excellent
Good luck