Carb jet holder stuck

[Tv]

When dis-assembling one of my carbs I found the jet holder completely stuck. What is the best to to unstick and get it out without damaging the carb body (which I did  :-/) ?
Why do the brass fittings stick in the aluminium body?

[Barry]

I had the same problem and managed to remove it with gentle heat and WD40. It took maybe 10 or 12 heat cool cycles over 2 days with WD40 applied from above or through the air  bleed  hole. No use from below as it won’t get past the O ring.

I devised my own method of applying heat by fabricating a copper collar soldered to the end of a 25W soldering iron. The collar fitted nicely over the boss on the carb body which acted as a heat sink preventing the solder from melting. It could be safely left for hours. This gives you an idea  the temperature reached wasn’t too high.