2000 FZS 600 runs lumpy after a trip to the Alps

[Disorderlypunk]

problem with universal o rings is that some degrade very quickly - i think its silicone content that does it
this problem has bit me in the arse twice
1st time replacing fuel tap o ring and it didnt last long (just grabbed some rings from a box meant for water taps)
2nd time was when i bought my girl at the time a little 125 and the previous owner replaced all the hoses with silicone hoses which looked great in blue untill a week before her test the bike decided to spit all its fuel across my garage (thank god it was summer and the central heating boiler hadnt come on during the night, one turn of a hot tap would have caused an explosion)