to replace one air shock before the other? My front left is the only one leaking, they're $200.00 bucks a piece and if I wait I'm afraid I'll have a catastrophic failure before I can get enough $ for 2. Then I have to consider for a little more converting to coils but I like the air ride. Are these different from other shocks, what's the harm in running 2, 3, 6 months with 1 new shock and 1 old shock if the air bag keeps it level? I just bought my wife a new car so I could have my mark back so I can't put too much $ at one time