You are right, they do unscrew, righty tighty lefty loosey. I e-mailed Patrick at CTD and asked him, he said the door pins were very tight and they were. As for the trip meter and clock *****, the CTD one's just install over the OEM one's. And of course I ended up buying a few more items from them, the seatbelt surrounds and SRS tab's, now I have pretty well everything for the interior except the shifter and their new very expensive hand brake lever.