You can find small hose clips by motorbike dealers like this:
https://www.la-becanerie.com/scooter/car...ssence-3x6.htmlI use small sections of brass tube as clip, pushed over the hose at the junction with the T. You can find small brass tubes in different diameters by model shops, generally used to join the wings of glider models.
Have a look at the black hose of the carburetor picture:
http://www.kriko.fr/tag/125
