recently i've run into some problems with my headset. i've found that when i bounce the front wheel, i feel some strong sideways vibration (i dont really know how else to describe it) in my fork instead of the front end just bouncing up and down. i had a feeling that the headset was too loose so i tightened it up, but once i tighten it up there is some serious friction in the headset, but the sideways vibration goes away.
my question is, is this sideways vibration bad for the bike? also should i be able to turn the spacers on the fork if the headset is properly tightened?
for reference the headset is a ritchey logic which came stock.