They do this with time.
Slacken/remove the clamp screw, you will need to counter hold the square nut as it slackens as it's not retained.
There is a small tubular spacer that prevents the clamp from being overtightened, this will fall as the screw is removed.
Reinstall the screw until slight resistance is felt - don't overtighten.
You may need to do this on all the clamps or just the ones at the engine end.
The rubber insulators are usually fine, just require a little extra "nip up".
If they are perished, split, bulging or distorted - replace them.
If the screws are siezed, try grips to secure the clamp, don't let the clamp distort. If the screw won't come out everything should be ok for the trip as long as the bike runs ok but plan on replacing the rubbers & clamps.
It is important that they have a good airtight seal.
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Last edited by piguglyshandydrinker; 04-07-12 at 05:51 AM.
'12 - VFR800x Crossrunner
'02 - 650 Transalp
'92 - VFR750
'91 - NC30 (UK spec)