I'm having the same problems as Andy with one of mine. Mine has been like this out of the box. It had a bad tank (completely clogged-replaced at my expense), broken spring (replaced), bad glow plug (replaced), bad throttle servo (replaced) and it still runs at a very high idle. I set the intake to 1mm or so and I did get it to idle once for almost a tank. Now it's back to the high idle. This thing hasn't even made it around the yard once yet. Now the steering servo is bad. I also notice that the rotary on the carb is really hard to turn. Maybe the carb is bunk as well.

On the other hand, my other car is great. I have about a half of a tank through it and the gears look like new and the clutch spring is still holding. It cranks in just a few pulls and still has the original bell. I have the upgrade parts. I just believe in the old "If it aint broke dont fix it" saying. I couldn't be happier with this one. FAST!! What a difference with the two.

I either got lucky with the good one or I was unlucky and got a bad one. I just wish they were consistent with quality. Must have been a bad lot of parts put together on a bad day. LOL.

Not sure what to do with the bad one. Maybe I'll just put it on blocks in the yard. LOL

I'll try the above advice and see what happens.

Let you know.