Hmm my way is different to ashleys. I fill right to the top with shock oil, then i put the piston in with the cartridge to the top of the shock shaft. Next i screw the cartridge in 1 turn and then pull the shock shaft slowly out then slowly back in again and tighten the cartridge up with the shock shaft stull pushed right. Smooooth shocksssss. Id reccomend the nortech whities 'o' rings aswell. These make your shocks alot smoother
HTH