Driving me nuts!!
Completely convinced it's a Friday afternoon Giant special.
So, after taking it back for 4th time at the beginning of June,the LBS claimed that it was my shoes/pedals/cleats (which I bought from them )making the loud clicking noise.
I have since replaced the cleats & pedals,one month on,still no further forward.
I have also ridden two bikes from the same dealer purchased post mine,neither have the issue & both owners have ridden my bike & the noise issue replicates & the jumpy gear change is also the same for them on my bike.
At the point where I am going to ask for the Bike to be replaced or a full refund,which is frustrating because they are really nice people to deal with & I am the type of person that hates complaining.