Mine does the same thing. Not sure what it is. Im going to just wait til it gets bad enough I can tell(it seems so slight no easy way to find it). Its been going on since Ive done the lift which was several months ago. If it explodes I suppose Ill know haha.
Anyone wondering where the process is, I emailed Jeff the other day and he wanted me to let people know that "Brackets are at powdercoat. Should see the blocks next week. Holpfuly the rest soon after!"