Hub/sprocket help

Hi there, I'm a noobie here although I've been lurking for a while, so go a bit easy on me please.

Having searched and googled and not found any answers, here's my problem. I've just replaced my aged and dilapidated Raleigh conversion with an On-One Pompino as the bottom bracket shell broke away from the seat tube on the Raleigh. Whilst I love riding the Pomp fixed, I'm really not confident through the traffic while commuting yet. I wanted to set it up fixed/free to have the best of both worlds. I've got an ACS freewheel which i fitted to one side of the hub, but when it's screwed on it binds up on the spokes, preventing it from ratcheting around. I'm thinking that this is because it is a double fixed hub and the freewheel needs a bigger shoulder to mate against. So my questions are,

1/ Is there a different type of freewheel that will fit without binding? or
2/ Is there a fixed/free hub available in 120 OLND which will give a 42mm chainline both sides?

I know that the consensus will be to HTFU and ride it fixed but this really isn't an option on my commuting ride at the moment, as it's like Death Race 2000 getting into Woolwich on a bikeand I've already had a couple of 'Oh shit' moments where I've tried to freewheel.

TIA for any help.

Peace

Kurt

so what did you do with the wealth of knowledge recieved??

I just read this - very confusing question.

@BlowieBen: I don't find it confusing. But I suppose a guy who put a chainring on the wrong side of his spider and didn't notice could find almost anything difficult to understand. ;)

@Kurt: I have a couple of freewheels (16t and 18t) I have used in the past on a fixed/fixed hub without any problem. In fact there was loads of clearance on both.
I know the 16t is shimano and the hubs are from SJS Cycles (I think they are SystemX clones) - 120mm OLN and about 43mm chainline with the shimano freewheel or 42mm with a dura-ace fixed sprocket.

What make is the hub?

on one and ACS i would geuss

Yeah, I thought that, but hub may be different.

Is it a high or low flange (not that it should make much difference).

Couldn't you put a freewheel spacer in between freewheel and hub? Maybe I don't understand the question though...

you might run out of thread on the fixed side if you do that.

With a fixed/fixed hub there's not usually enough thread for that, especially when using a freewheel they tend to have a thread wider than that on the hub anyway.

Chris - beat me to it.

@BlowieBen: I don't find it confusing. But I suppose a guy who put a chainring on the wrong side of his spider and didn't notice could find almost anything difficult to understand. ;)

hahaha true dat