Couple things to think about if your 110 has proper doors as opposed to the things with roll-up windows:
Hinges can wear badly if that's the case might be time too think about a new top hinge. Also, door seals are not all the same. if the ones on the truck are crap or blue box replacements you might want to think about good quality OEM ones. had this problem on my truck - could not get the doors to close right until i replaced the seals.
Door lateral and vertical adjustment can definitely make a difference - make sure that you've not got your doors shoved all the way back so the fromt lips don't engage the seals properly.
Lastly, check that your door tops aren't bent outward - seen that more times than i care to think about. They need to be nearly vertical with a slight lean inward.
ajr
op2:
