I can't hold a 2 min pace either. I could in February and I can't now, haven't been training enough.

You have to be meticulous about your technique. Be a perfectionist. And then when you have it down, do the required mile-yardage, what have you. And you never ever stop doing drills.

Total Immersion, yes, but to be honest, it teaches you the same end result. And the power part, the underwater stroke, is not really covered I believe (I was taken through all the TI drills).

If you're doing ironmans already, I cannot help you, but for shorties, the above is the ticket, so they say.

What's your stroke count on a lane? (what lane?)