Loss of tyre pressure

[redfox1]

Thanks,guys.I think the tech did use some sealant cos I can see the remains of it on the wheels.Done the spit test myself,and could see nothing-I guess I might go back to see if they could have another go,or maybe take it to another garage,but original garage is really local,so it will be harder,but the bike is otherwise great,so I suppose it's no real chore to put myself out!