I have 2001 ford ranger 4x4 with 4.0 sohc.the timming chain on the passenger side rear went bad and replaced it with a new chain,guide and tesnioner,and now i have another problem when a started it for the first time after replaceing all the parts the top sprocket is pulling away from the cam,and i also replaced the cam thinking that was the problem,could there be something out of line causing the sprocket to pull away,the part that you bolt the top sprocket to is pulling out of the cam,could the bottom sprocket be on backwards causing the chain to be out of line,please help,thanks kevin