I think the 4-door install is pretty easy and straight forward. Try to do it on a warm sunny day as it'll help a lot. A lot of folks have complained about the bows breaking the plastic tabs on the door surrounds and the solution to that is to not try and install them from the top of the tab but to slide it in from the side. One last bit of advice that will help get the latches on, with your Jeep still in the sun and while things are nice and warm, partly open up the sunrider so that it's kind of standing up, disconnect the arms one at a time and then position the ends just in front of the mounts. Slowly pull the top down and, you should find that you can latch your top without too much fuss. Leave it like this for a few days to allow things to stretch out and then, open up your sunrider, reconnect the arms into the mounts as they should be and you should be good to close it back up.