Gas in oil of Rancher 420

My buddy has a 2007 Rancher 420 fuel injected and somehow gas has started to get into the motor oil and oil has a black deposit in it. Bike may have a burnt valve because it has been ran low of oil before as well but not sure if that would be causing it, we also replaced the piston rings in it a few months ago but didnt start getting gas in the oil until recently. It is snorkeled but the bike has never been sunk. Would anyone happen to know what my problem may be?

Attached Thumbnails

Click image for larger version

Name:	13411900_1080295018673826_3939221062360158312_o.jpg
Views:	N/A
Size:	286.8 KB
ID:	48657
 

Click image for larger version

Name:	13612215_1080296345340360_5331156669389963102_n.jpg
Views:	N/A
Size:	47.9 KB
ID:	48665
 

Gas in oil of Rancher 420

My buddy has a 2007 Rancher 420 fuel injected and somehow gas has started to get into the motor oil and oil has a black deposit in it. Bike may have a burnt valve because it has been ran low of oil before as well but not sure if that would be causing it, we also replaced the piston rings in it a few months ago but didnt start getting gas in the oil until recently. It is snorkeled but the bike has never been sunk. Would anyone happen to know what my problem may be?

Attached Thumbnails

Click image for larger version

Name:	13411900_1080295018673826_3939221062360158312_o.jpg
Views:	N/A
Size:	286.8 KB
ID:	48657
 

Click image for larger version

Name:	13612215_1080296345340360_5331156669389963102_n.jpg
Views:	N/A
Size:	47.9 KB
ID:	48665