i have a 92 318is. my passenger and driver side doors both have the little plastic piece that pinch on or slide on and go around the actual door handle. i have problems putting them on and making them stay on. they go on and stay for about 2 days or however much the car is used and eventually once the door it shut it pops off. ive tryed superglueing them on but there is no good connection spots other than the actual place where it pops on and i dont want to do tht. what do you think i could do and should do.