Soaking your clutch discs depends on the clutch material. If you are using clutch discs that are like the original honda clutch discs, then yes, it's a must to pre soak them. If you are using a clutch disc like a barnett kevlar disc, then it's not really necessary.
Nicholson 500x (Project)
Nicholson 185s
Nicholson 110 (That takes an atc70 tank)
Ascott 500 head/350x (Project)
Homebuilt Racer Chromoly Suspension 110 (Ragin Runt)
PK Racing Suspension 70
A+ Inc Suspension 70
AWS Aluminum 90 frame
Hi Performance ATC Suspension frame rd350
Hi Performance ATC Suspension frame 90