I have some rust on a door skin above the beltline trim and some on the offside rear arch leading edge which I would like to banish. In order to do the job properly, these two trims must be removed. Is this a matter of unclipping or are they stuck on? If the latter, I usually use Dental floss to cut through the trim tape, using white spirit as a lubricant but I would rather know before i break something. Thanks for any advice.