Yes, the F is a hard chord to play. I'm still trying to get it down, I am definitely getting better though, most of the time it sounds okay, my problem is that I keep muting the 2nd / B string. Persistence is key. I remember having real difficulty with the D chord, but now I look back and wonder how that could have given me so much trouble. I'm hoping in a few months I will look back at the F chord in the same way (oh and that dratted B7 chord as well.......)