Advice on front wheel and brakes.. should it just spin?

Ok, performance on my 50 isn't what I expect.. derestricted, 4.8g rollers, Endy exhaust, clean filter, .65 main jet... yet it gets to 30mph on the flat and only then slowly creeps to 33/34.. will do 38 downhill...

So tonight, was pushing the bike with the engine off and it felt like it had resistence..

I jacked the bike up and the front wheel has to be pushed by hand to make it rotate.. as in it doesn't freely spin. Is this normal?... you can hear a sound like the brakes rubbing or bearings as you rotate it by hand, and I can't help but wonder if there's something up with the bearings or the brakes causing a lot of resistence.. almost like driving with the front brake on slightly.. but constantly...

 

There should be a resistance it should be slightly free aswell though.. If it gets to 30 or whatever fine then it's probs not the problem