So i got another TT250 ( this makes 3 ) complete , partially re-assembled , wasnt turning over properly , so i checked timing and it was out , but the chain is unbelievably tight.. even with the tensioner out , i got the tensioner in , but its now so tight its hard to kick the motor over. Its a fairly new motor ( unsure of how new ) so i was told , and cleanliness indicates that it may be , oil filter did have some metal dirt in it ( from what, i have no idea ) but everything in the clutch section looks brand new. My main concern is the chain.. its way too tight , i need a few opinions on why this would be. I have a manual for it , but no-where in it does it have this problem. ( also have a repair manual on cd bought from ebay ) input?