Help with 120e mark ii

[Hi-rpm]

Hi all
I'm having an issue with my 2020 model 120e mark ii where when I've made a few cuts it sounds like it's running lean and struggles to idle and rev up
I've replaced the crank seals, cleaned the carby, plug, replaced the ring as it seemed it had a slight bit of carbon just past the piston.
It does have a new aftermarket carby also but I don't think it's the issue but could be wrong.

Any help would be great as it's starting to do my head in.

 

[TheJollyLogger]

What makes you think it isn't the aftermarket carb? They are notorious for causing those very issues.

 

[Hi-rpm]

Honestly didn't know heat would effect these carburettors like that.

 

[TheJollyLogger]

Honestly didn't know heat would effect these carburettors like that.

There's whole threads on here about the aftermarket carbs... BTW welcome to AS, and if you scroll down the page there's a chainsaw forum where all the gearheads hang out... might want to repost there