1985 vmax secondary clutch free floating ?

[SSDSTS24]

I just bought a 85 vmax I was told the owner use to race the sled (does show 1200 miles). I just started to go throught the sled and found that the secondary clutch is set up to free float on the shaft. Is this something that was done for racing if so can this set up be used for vintage trail rides? Or should I shim it? It does have a comet primary on it. I only saw the clutch engage on a lift it seem to engage ok. But I dont recall what the rpm for engegment was. This is all new to me? I also bought a 1985 srv with 1100 miles on it that clutch is shimed and doesnt free float.

[Vmax540]

http://www.vintagevmax.com/1986_service.htm