I agree with Metal' that cylinder looks trashed. if you can hang a finger nail in the scratches then it's beyond honeing. If you sanded that scored area out then you have formed a depression which wont allow the the rings to seal.
White smoke is normaly an indication of water or a lean condition. Since you have no water then probably the jets are clogged from sitting up for so long.
the gy6 piston has 3 slots and uses 5 rings. the bottom slot is your oil scraper . it uses the 2 shiney rings with the wavey ring sandwiched in between. The top two slots are for compression. The two dark carbon rings go in these slots. Ring gap is .0010, Postion the rings on the piston so the gaps are at- looking down from the top- 12 O-clock, 4 and 8
|