After a lovely super cold winter! Well still is sort of..

Took the bike out for a ride last night, after 2-3 month gap.
Noticed couple of things..
Bike Facts
Mileage - 44k
Last Service - God knows! Great info provided by previous owner ...
Issues:
1: Sometimes when moving off and releasing the clutch as go on the throttle, there is a strange scraping noise like from the gearbox maybe? Like a metal scraping sound
2: Bike won't idle, cuts out straight away, unless ride with choke 1/6th of the way on so tickover at 2-2.5k rpm which obviously is loud and not too great!
3: Battery is goosed, getting a new one however
Any help would be great. Thanks in advance