I dialled the temp up to 235c last night and overall it seemed to work a bit better for the 1000D.
My temperature sensor 5+ cm’s back from the sealing area and it is held in place with some heat resistant cotton wrapped around the copper tube. So I’m thinking as its basically an insulator that its probably reading much higher than at the actual sealing area.
I think I have a spare sensor so I should just measure the temp on the sealing area for comparison so I actually know what is going on.
The couple of sections I did last night had only a couple of small bubbles.
Cheers