Hi - a week ago the front nearside brake on my 2014 Qashqai seized, leading to clouds of smoke and only just got to park it. 2 hours later the RAC man found that he could drive it but there was a knocking noise. 'Take it to the garage'. This I did - to a Nissan garage - without trouble but the noise is still there. The garage can't find the cause either! The noise is a bit like if there was a stone in the tyre. Any comment?