Yes they are pressed on. Any good sled shop should be able to do it. Unless you are having ratcheting problems I'd stick with what you have on the sled right now.
96 xlt sks/rmk. custom 5.5 inch riser on the bars, custom air intake, custom front shock mounts, custom oil feed channel in block to inner pto end bearing, primer (I hate chokes), custom = I made it myself