I just replaced the worn out chain rear derailure and casette on my bike. It rides perfectly in the middle chain ring. As soon as I put it into the small ring it goes but makes allot of noise until I start to pedal hard such as up a steep hill, then it gets chain suck in any gear with the small ring. I know that I was having a similar problem with the casette and and it was fixed once I replaced. Are the front chain rings worn to that point also? Is there any break in needed for the chain, or can this be adjusted or am I stuck until I replace the chain rings which unfortunatly means the whole cranks, and most likely the bottom bracket. Is there a quick fix or am stuck without my low gears for a race on saturday which hopfully the course isn't too hilly?