Re: Noise when lowing from 10th to 9th-5th gears
what kind of noise?
Squeaking, ping, rattle?
Have you tried to clean the chain with the adapt tool and grease very well derailleurs?
You can do a simply test for your chain.
First You need to remove the chain from the bike and lay it on the ground.
Normally old and worn out chains, when put on the floor (long) and made to move, if they have a movement like that of a snake, you need to change the chain; but if moving them they are pretty hard (linear movement) , it means that the chain is still good (old motorcyclist trick )