You will struggle to get the o ring to seal or even seat properly again unless you use a new one. Just my experience with the 916/748 bikes which use a similar seal.
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![](image.php?s=7c4427b9166c46967ac4474b115ccee4&u=31856&type=sigpic&dateline=1441562961) Roast Beef Monster!
Termignoni and Bucci - Italian for pipe and slippers!
S4 Fogarty, S4R 07T, 748, Series 1 Mirage
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