21 speed bike gear problem?

Dylan

New member
I looked online to figure out the cable adjustment and so on so all the gears work. My only current problems is if you touch the shifter and it moves a little it will go to the next lowest gear without actually clicking to the next number. Like for example, if i have it on gear 4 and my hand touches the shifter, slightly twisting it towards 3, it will go to 3 and then jump back to 4. It only has this problem when downshifting. I got the bike last on christmas so i've only had it for a few days.
I tweaked the barrel adjuster thing and got the problem almost worked out but that's all the barrel adjuster will do for it. And the problem is when the shifter is twisted it will change the gear on the bike without actually clicking to the next number.
 
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