I am hoping someone can help.

My 912s keeps throwing the passenger side carb on shut down or start up. It happens every hour or two. I have replaced the rubber and removed the limiter spacer on the clamp to get it nice and tight.

I have the Sting TL bracket mod to hold it in place and 3 springs to hold it secure. But it still keeps falling off.

I have the idle low (1700) to minimise the kick on shut down and the start ups are as smooth as I can make them with my procedure.

Any ideas?