Your warm re-start issues aren't just yours. Nitro engines, characteristically don't want to start warm. I use a starter box and have to turn my throttle trim up to raise the idle quite a bit, and sometimes it still doesn't want to start. If you wait a couple of minutes for the engine to cool a little bit, the starts are much easier. I usually take a bit of time to check the truck for loose fasteners, and make a trip around the track to pick a couple of rocks, and that is usually long enough to cool the engine enough to start nice.