Hey guys....brought the buggy in our LHS.
It can now idle since they detected that the clutch spring is the culprit.

We brought it back home, run it for a while like 2 mins run and
BANG! it wont stay during idle mode..car will sit a bit and will start moving
without any input from the controller.

Brought it back again to the LHS they replace the clutch spring again with a better one
again . (for the the second time around)They said carb setting are all OK.
But a few run it will do the same running by itself during idle.

What do you guys think causing this? the guy on the local hobby shop
suggested to eplace the stockengine with an infinity that he said will do
good than the stock one.
Do you think it;s worth to get a new engine..??
will it really solve the problem???

My friend is so frustrated, he bought a new buggy and never had a chance
to enjoy this hobby. All he do is going back and forth to our LHS (lol