All ActivityMost RecentMost LikesSolutionsRe: Wobbly loose mirror armThanks - that's very useful information.Re: Wobbly loose mirror armThanks for the post. Mine is an electric for a class C. I removed the assembly from the door frame but there doesn't look like there's anything to tighten. The most logical place would be under the post where the "no serviceable parts" cap is...Wobbly loose mirror armhello I have a mirror arm on a Ford 450 that is very loose where the mirror arm meets the housing on the door. the mirror is made by Velvac. There's a cap on the bottom which says not to remove it and that there are no serviceable parts. Any ideas on how it can be tightened? Thanks