Some have posted about the bike moving excessively when using the jiffy stand. They will tend to creep a bit when the weight is applied to the stand especially when on irregular surfaces such as an incline.
Another thing to check is for excessive wear on the locking plate that locks the stand in the down position when weight is applied. You can see the worn edge on this pic below.
Another thing to check is for excessive wear on the locking plate that locks the stand in the down position when weight is applied. You can see the worn edge on this pic below.
