Recumbent - help removing stuck kingpins on tandem trike

i have a home built tandem trike mostly built from greenspeed plans
i tried to replace the front steering bushes they were a bit tight so i forced them in now its to tight and i cant steer or get it apart to fix it
its a cromo tube with brass bush inside and then inside that is 16mm stainless steel kingpin any ideas on how to seperate the three parts without destroying them?

please help i cant ride wile its broken..

If all else fails, apply heat to the outer tube and bushing. That will expand the outside and allow the pin to loosen.

thanx catz ive heated it a litttle and it didnt seem to loosen at all didnt want to over heat it and cause it to weaken tho
maybe if i heated it till it was red it would soften and become loose but i dunno what this would do the the cromo it might make it weak after it cooled down

It shouldn't have to be gotten red hot, unless it had oxidized in place. (like a muffler/tail pipe).

Maybe the next thing, if you can get it off, is to take it to a machine shop that has a hydraulic press.

i have a home built tandem trike mostly built from greenspeed plans
i tried to replace the front steering bushes they were a bit tight so i forced them in now its to tight and i cant steer or get it apart to fix it
its a cromo tube with brass bush inside and then inside that is 16mm stainless steel kingpin any ideas on how to seperate the three parts without destroying them?

please help i cant ride wile its broken..

Greenspeed plans? Where do I get some of these??

http://www.greenspeed.com.au/puborder.htm

Any thing you can attach a slide hammer to? I use large slide hammers to remove frozzen pins from cranes and bucket trucks, oand have had very good luck using them to remove stuck seat posts as well.