It is wise to mount a small current meter in the powerline of the electric motor. Then you will see what the starting point is and how lose it will become.

With our experience indeed the pinch does not look changed that much but with all engines done so far we only needed a few tanks to go on full performance. The pinch looks tight because the piston is now hitting the sleeve surface all around as I did mention before with my 1st engine.

Yes, the aluminium construction needs power and time to be heated up. Richard his system is using 220v 120w heaters which will deal the the aluminium case. I started already with a lexan case because of this.

Congrats with the result!