Carburator problem

[RomanTheBanana]

Hello, while I was testing my throtle cut, I saw that my carb was moving (on a thunder tiger .46 pro). So I tried to tighten it up, I was turning the bolt, but nothing was happening. So I then took off my carb with a little effort, and I looked at the little bolt, it turns by itself, and I can't take it off. Is it normal? Is there something I can do? Thanks for any feedback, here some pics:

[nitrouspete]

Take better photos. Too blurred to see details.

[briankizner]

The pictures are not all clear so it is hard to tell. However- I am not sure but I think the little nut on the rod with the round cutout does not need to come off. It is used to squeeze the sleeve around the carb which stays in by friction. Insert the rod with the nut loose. Then insert the carb as far as it will go. Then tighten the nut. If it will not tighten, the threads may be stripped, in which case you will have to find the part to tighten the carb into place.
I should add that this is not unusual. Vibration loosens nuts and bolts.

[RomanTheBanana]

yeah, all what you said ir right, and yes, the nut can't be tightened.... I will try to find that part

[RomanTheBanana]

http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXAHGS :D I think .46 and .40 have the same carb!! ordering!

[RomanTheBanana]

I did not rush buying it, and I found a better shiping deal on ebay. I emailed the guy to make sure its compatible with my engine. Waiting answer.

[Ricardo]

Looks like the nut is hitting the thread end before holding the carb.
Try putting a washer behind the nut.

[RomanTheBanana]

the thing is that I can't take off the nut, and I already ordered a new set.