Ics l85a2

[AirsoftJames]

Hello everyone!
Ok so a little while ago i bought the ICS L85A2 and immediately when i bought it i had issues with the fire selector switch.
I would put the fire selector switch into semi automatic and then after 2-3 shots the fire selector switch would fall down into full automatic. Obviously this was because of the internal mechanisms vibrating and causing it to fall down. This meant that the fire selector switch wasn't seated correctly in the slot for semi auto.
Now, i am seriously considering buying another one, because whilst i used it, honestly it was amazing.
So what im asking is, does anybody else own one currently who had this issue? Or does anybody own the rifle and has never had problems with it?
If so should i buy another one to see if i just got a bad lemon?
Cheers!
- James