Losing power at more than half throttle

[Itxi]

So last thursday I finally got the CG running again (turns out the points had closed up, no idea how )

It's been running fine up till today this week and I was really chuffed, thinking it was finally working.

But halfway to work the engine suddenly packs in and I have to pull to the side of the road, started up again no problem but now it loses power and almost dies if I go above half throttle.

I was thinking possible carb issues again, but I had cleaned the entire fuel line (including the tank, which I lined with POR-15) and it's not done many miles (about 30), surely not enough to clog up?
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Hastings Direct, Scum you say?

[Itxi]

Just had a look at the carb during lunch, fuel is leaking out the back, so air must be getting in somehow.

Going to see if I need to rethread the back screw as well (didn't originally because it was fine and it's a blind hole)
____________________
Hastings Direct, Scum you say?

[cb1rocket]

can be a sign the main jet is blocked, happened to me