R1 carbs keeping sliding of !

no matters how tight and well fitting I think I've got them, the pipes I have connecting the carbs to the manifold keep working there way off. I've tried mikalor clamps instead of jubilee clips but they were not better. Is this a common problem? How can I stop it happening?
Thanks al

Are your pipes swaged? 

Is it a home made manifold? 

How long are your silicone joiners? Loner they are more flex on the carbs putting more strain on the clamps. 

Strange i don't have this problem but i used the original mounting tubes from the R1.
And my manifold got these extra ,dont know how to say it right bench at the end.

Maybe you have created a stud from the carbs to a solid place on your engine so the weight on your connection would better…….. so said if i don't know the right words for it sorry…

Brad. said

Are your pipes swaged? 

Is it a home made manifold? 

How long are your silicone joiners? Loner they are more flex on the carbs putting more strain on the clamps. 

No they are not. The manifold end is fine, it's the carb end that's the problem. It's a home made manifold by the previous owner and doesn't totally line up with the carbs like the one in the pic above.
The silicone joiners are about 1.5 inches long so I could make them shorter

Style said

Strange i don't have this problem but i used the original mounting tubes from the R1.
And my manifold got these extra ,dont know how to say it right bench at the end.

Maybe you have created a stud from the carbs to a solid place on your engine so the weight on your connection would better…….. so said if i don't know the right words for it sorry…

Thanks for the pictures.

No problem  

try cutting them down so the carbs sitting just off the manifold, its likely to be the flex that cauing them to come off.

ive seeen folk use a little bracket to secure th carb upright.

the manifold not lining up could also be the issue though, that will creat stress on one or two silicones.

ive made the silicone as short as possible so I'll see how this goes