Just go with the book, its a new chain so it will not be to slack, the reason the chain goes tight when you sit on the bike is the angle of the swing arm changes. this is perfectly correct and the chain will be at the correct tension when the bikes under way ! more important is the chain is parallel with both front and rear sprocket. so keep riding and less worry.:thumb:Anyone adjusted their chain yet, and did you go by the book? My chain is at the lower side (1 1/4) slack but seems kinda tight when I sit on the bike. I just dont wanna cause an oil leak by running to tight.