Fixing passenger side seatbelt?

I love my Toyota Tacoma 2000! This is my 2nd Toy pickup. I was driving a Lexus when I got hit and the poor baby was totaled so I went back to the truck. My 93 still runs great but it looks awful cuz I loaned it to my son to much. But he will never touch this one. I am already baying this one completely. And ironing all the kinks out. Biggest problem I'm having so for is the seat belt on the passenger side takes prisoners! Whoever sits on that side has to endure no freedom of movement. The belt lock down with no release unless it's unlocked. Can it be fixed? I would like to save the cash so I can put a leather bench in.

 

Really, the only thing you can do is replace the seat belt unit. I know of no tricks to make a finicky one act right.