[xelasnave]

Before I get too ruff I thought I would ask.
The zwo has two spacers in front of the filter wheel, 21mm and 16.5 mm and I would like to seperate them, which I presume is possible, however they seem determined not to seperate when I apply all my force.
Does anyone have an approach to this sort of problem.
I expect wd40 is a no no and all I can think is maybe heating them...I dont like the idea of using multi grips or the like.
I am not sure of what way to proceed.
I am trying to put in the coma corrector and it seems it needs a 28 mm spacer but if I can seperate the spacers it at least may be a start...even though I still have different size threads I am hoping there may be something laying around that I can at least put in the comma corrector.
Or should I just try and buy a spacer of approx 28 mm
Alex