The original mirrors on my 1998 Chevy need to be replaced or extended. They are the triangulated factory type and they shift / move whenever the door is closed. What is a good aftermarket type that will replace these using the original mounting holes? I pull my 30 foot Haulmark and it is quite annoying and can be dangerous out on the highway as well. I also have a drawtite brake controller but I lost the darn directions for setup. Regards, Upstaged in Michigan.