Hello, all.
I just got the final pieces for my darkroom today! So I've started about running tests, the first one is to find my SCT. I'm finding that I'm struggling to get gray tones. Here's my details:

Beseler 45M enlarger w/75 watt lamp
Schneider-Kreuznach 135mm lens
Ilford multigrade FB classic glossy paper
I put a 4x5 FB+F negative in the negative stage and the grade 2 filter

My first attempt to print I did three second brackets at f8. So I had exposure times of 3-30 seconds. The entire strip was completely black.

My second attempt I did the same but at f22 and I got two gray tones (so 3 seconds and 6 seconds) with the rest of the strip bring black.

The enlarger head is sitting where it does for enlarging a 4x5 negative to 8x10.

My question is why I'm having to cut down so much light to get usable exposure times? Feels like the lamp is too hot or the lens is too close. But 75w seems appropriate and the head being halfway up the height of the stand seems appropriate also. Can anyone think of what I'm missing?

Any direction would be lovely, I can't figure out what I'm doing wrong.