Now you see it, now you don't. Yesterday, I just realized one of the excess petrol hose for the carburettors was missing so today had it replaced FOC. The last time, it was the excess petrol hose for the petrol tank that went missing. I conclude that the metal clip that comes along with the hose as quite unreliable, better to use a pvc cable tie before warranty expires. When I got home, as a back-up plan, I used another cable tie and secured both hoses to the power cable as I noticed it was very easy for the non-cable tied hose to come off.