ok, i just wanted to make sure you had the right syringes. my vet switched our insulin from one that used a u-40 needle to lantus, which needs a u-100 syringe. when you said the dose at .2 i thought you might have the other ones.
there are a couple of options (i think) on why he might be that high at amps. one is that he needs more insulin, the other is that he's bouncing from a low number somewhere in there. as you are gathering data we'll be able to figure it out.
a third possibility might be if the lantus isn't good, but each time you've increased the dose he seems to have a blue number thrown in there. i saw you joined here in october - is the lantus that old? do you know when you had a new vial/pen?
and another check - have you looked at the yellow starred sticky on taking care of your lantus? no leaving the lantus out, no shaking it, no see-sawing the insulin between the syringe and the bottle as you draw up the dose?