cranial ostopathy is fab, I thoroughly recommend it. you might find that the long labour and cord etc going round him means that he has area's that have got 'stuck', hence the crying and screaming.
whan I was pregnant with DS1 I had a car accident at 28wks. I hit the steering wheel with my bump and broke my ribs, and also (unknown to me at the time jarred baby). when he was born, he screamed. and screamed. and screamed. he literally did not stop for 5wks...he even whimpered in his sleep.
I took him for treatment, and whatever they did that first session.....I will never know as I was too tired to take it in, but my god, I could have snogged the woman after....he slept solid for 3hrs after, silently!
it took about 7wks before I would say he was 'normal' and like my first three babies, but he slept after the first and continued to, pllus feeding got much easier aswell.
oh, a baby swing helped too. I think he needed to be slightly curved rather than flat all the time. in fact, for about a month after he slept in the swing at night too.......padded out and cosy, but he was fine and we all got to sleep (the whole house this time).
as for the intolerance and reflux......
he may also be suffering 'silent reflux', which is where the milk some halfway up but not out completely, as does acid, and so causes a heart-burn feeling for them.
now, if you suffered heartburn at all during pregnancy you will know how much it hurts, and with babies, imagine feeling that pain and not knowing why or how.....
my DD3 suffered from severe reflux 8and* silent reflux. awful, and frustrating. when the docs explained why and what tho, I was able to handle it as I understood IYGWIM.
if it is that, you will still need to use the gaviscon (altho try to give separately at the end of the feed). it helps thicken on top of the nilk, therefore helping stop the reflux as it is too think to rise (not sure if that is completely correct, but it is as I understood it from how it was explained to me).
not sure on the best milks no to suggest.......my children had soya milks and hypo-allergenic ones.
good luck, and I hope things start to settle with him soon.