I have a major problem with my door locks. they are the manual ones. the front driver and passenger wont open from the inside, i try to unlock the passenger side from the inside and it doesnt work, its almost like its stripped or somethin on the inside of the lock. to open it i have to get out of the car and unlock it with a key, i also found out that my driver door does this as well when i accidently locked my self in the car. any ideas what i can do for this? if i need all new locks about how much would it cost and would it be possible to put in an automatic lock system? or keyless entry?