The S1 Cafe - Helping Your Espresso Dreams Become Reality

Thank you for your help! I will give this a try.

Water level probe bolt was not loose. I tightened it down and was able to move it a tiny bit, but there isn't much steam coming out of the wand.

Finally got to test this. We mostly drink Americanos so I wasn't freaking out too much.
So, when the boiler cooled down completely, the pressure did not go down to zero, it stopped at around 0.2. Then when I fired it back up, it stopped at 1.5 bar. Houston, we have a problem....
Thank you Chas!

Boiler seems to be working fine as it can produce hot water. The steam wand takes a long time to get going (10-15 seconds) and then barely lets out enough steam to warm a very small amount of milk (3-4 oz). I removed and cleaned the tip, but still no luck.
What am I missing? Thank you!