Ok. Just to make sure I don't make a stupid mistake. I'll turn off the fridge, then add the saddle valve, make sure the hose has been purged of air. Hook up the refrigerant. Turn on the fridge and let it run for 5-10 min. Then I'll let refrigerant in for about 5 seconds, give it about 10 min and then check the evaporator coils. If coils not frosted completely then repeat. Does this sound about right? Thanks.