I too am surprised.... I'm using a 75 what bulb - my first two prints #1 - #2 were made using relatively dense negatives (though not stained, I'm using Rodinal) and printed with a 75 watt bulb with 4 paper towels clipped over it. Distance from light to glass was 18 inches.... my 3rd print #3 was made using a negative that was not quite as dense and printed with 6 paper towels clipped over the bulb. I was using an amidol developer for all three.

I have used PF130 at 1:1 with silver chloride papers, though not Fomalux 111, and my developing time was 1 minute. It's usually two minutes with enlarging papers.

I have a 15 wat bulb and will do a quick test with that and PF130 and Fomalux the next time I print...