Re: used pump affect production?
I haven't heard of friends having trouble with used pumps, especially if you have replacement parts and the air hoses and all are in good shape. Have you been back at work for a while? Your body might be getting used to a slightly different schedule. Also, does the full suction cause discomfort? I've had friends who "cranked it way up" when they wanted more production, and it ended up resulting in pain while pumping.
I pumped at work for about 7-8 months after returning from maternity leave, and found relaxation to be the ticket. Granted I'm fortunate our company has private lactation rooms on each floor. Aiming to get as comfy as possible, I'd sit on the floor and read the newspaper while I pumped, or sometimes close my eyes. Also I tried to not look at the numbers on the side of the bottles because those darned things just get a person upset about "how much did I pump today?".
Just some thoughts, hth
Mommy to William, 4/29/09, 7 lbs 13 oz, 21 inches.
Mommy to Evan, 3/18/06. 7 lbs 3 oz, 21 1/4 inches.
Nursed both boys to 14 months