I would not agree with u as per my experience gs is the most balanced bike i have ever rode, and for the rear tire u can call it relatively thin but it is in no sense disbalanced and about that sprocket thing i neither experienced nor heard of that noise thing ever before.
It has been a month since I bought my gs I have done 980kms with it and got it serviced yesterday so far my experience is:
So far i have encountered two faults one was a faulty indicator which occurred the very next day of my purchase but it turned out to be a lose connection in the wiring due to the negligence of the mechanic who prepared my ride for delivery.
the second is, there is a small rubber holder mounted on the from mudguard which holds the speedometer and rpm cables, got lose and needs to be replaced, but yesterday when i took my bike for 1st free service and mentioned the problem then the service department guy said that its a local made rubber item and company does not supply these parts thus these should be bought elsewhere. However at the time of purchase the salesman said that they have all parts and service items.
Tips For new purchase
1- U should arrange an engine oil of rating: JASO MA or MA-2(not MA-1) or API SF/SG having viscosity 10w-40 petroleum oil, make sure the oil u buy for ur new ride should NOT be SYNTHETIC.(synthetics should not be used before 100hrs of riding or 1500kms)
The bike comes with oil pre filled from the factory. At the time of delivery start your bikes engine and set its rpm under 1500 and let it run for 20 minutes then ask the service guy to drain the oil and fill the new oil(which u brought) in.
Then during ur trip to home dont drive the bike in top gear and dot try to baby ur new engine, the initial 100 kms are crucial for proper break in of ur new engine thus drive ur ride with varying rpms and change the gears as much as you want dont push too hard for initial 100 kms i.e keep under 6k rpms but dont drive under 3k rpms that would ruin ur engine too.
2-Don’t ever trust on their mechanics coz they are cheap a** ******** and don’t leave ur precious ride in the hands of these cheaters.(don’t ask why I m saying this it’s a long story but trust me)
3- Do check all electrical connection YOURSELF don’t trust them.