I hope you don't have a damaged razor.
Anyway, I had same problem with Feathers in slim, but the Israeli Personna was heaven. I use it on 3 when shaving every day and 4 when I skip a day or 2.
Good luck and I hope you find the right combination.
Sure seams to be a bunch of Phil's on here.
Phil
And yet another Phil, the "p" in pcullens!