Has anybody dismantled an ignition barrel to fit new tumblers and key matched to other locks?

As per title, I have a very good tailgate lock with two original keys and I would like to re-tumble my other locks to match. I have the barrel removed from the steering lock but not sure how to dismantle the barrel without destroying it. Can anyone pint me to a how to on the ignition lock?
Also looking for a set of tumblers if anyone can point me in the right direction.
I do have a complete spare set of locks as I currently have a set of MK2 barrels fitted with an AH key.
Thanks in advance!
 

crazyquiff has a re-key service for ignition barrels

See link —–   http://www.golfmk1.co.uk/Items.php?cat=search&group=ignition%20re-key

I seem to remember he sold the kit to do it yourself, but I couldn't find it (I didn't look that hard though)

Thanks for the link, I'll drop them a line.
I have the barrel apart now, it's quite straight forward to do.

How does the ign. barrel come out?
I had a look briefly after changing the door handles yesterday but it was time to go to the pub so I cut it short!

If you got new handles it is way easier to re-key those than to re-key your ignition.

You have to drill out the pin that holds the barrel for the tumblers, and that is a thing best left for those that have done it.  

I had the same issue as I had 2 door keys and one ignition that was the same as the boot and glovebox.  
So I took the barrels out of the door and re-keyed them to take the ignition key.

I had a few spare handles I got at the breakers, and then I took the waffers out of others to get a good variety of them to use….  Makes it easier to lock and unlock the car now.  (although with a vert I never lock the doors) learned this lesson from my 67 mg midget and a sliced top, not like you couldn't take it loose to open the door..

Thanks for the info .
I've replaced both door handles so they're the same key, the complete set wasn't available for a MK1 so I had a MK2 set and a separate hatch lock/key which can stay in the car.
We can live with door and ign being different!