bro loose or tight chain issues comes in many new bikes
so thats normal and also loose nut & bolts is not an serious issue
front gerari se awaaz nahein aane chahiye but i feel i might be issue of no grease
so when mechanic will open wheel issue might be resolved with just grease
Regarding oil coming from engine nut that is really worrying i don't know what is that bolt for
suzuki gs owners can guide you better about this issue
In suzuki bikes GD110 has really great quality baaqi others bikes really are considered low quality & rust kings
and that is really an bad truth about suzuki bikes we can't ignore that I really wish & hope pak suzuki do
something about these issues as finally people are showing some interest in suzuki motorcycles