Question re new type PHM40 AD

These are the newer type with black tops and 21mm nut at the bottom.

For a while the front (AD) doesn't flood when the tickler is pushed. (rear is ok)
I removed the carb and can't see any wear or rubbish.
The needle seems to be sometimes slightly sticking in the seat when the carb is connected to a fuel line.
The needle has a red coloured sealing cone. I've only seen the black sealing cones on older PHF and PHM's
Is the red cone prone to stick in the seat ?

graeme

Graeme, I have used the orange ones before on Weber carbs and never had any issues.
Maybe the new fuels and the rubber are reacting sone how?
That’s all I got!
Good luck
Paul

Hello Paul,

That's all I can think of too ??? Things that make me go Hmmmm ?
I've ordered new needle and seat. See if that fixes it.

Graeme