[steveproracing]

Team drivers favour the use of one tam red o ring on the shock top side of cart and one mip blue on the bottom and use the shims in the upgrade rod guide set to adjust the friction created(i use 0.6mm) There is alot of differing views on bleed screws but our view point is avoid them. This shock is an emulsion shock ie it needs air and oil mix to work effectively, this was chosen over the oil/diaphragm shock as was found to be superior for off road usage( remember tamiya created this shock from scratch rather than usuing the df series of shocks which are offroad versions of the wonderful trf tc shock)
Using a bleed screw you will find it hard to create a pair of shocks with the same amount of oil to air ratio. bleeding the way jimmy describes earlier is far easier to maintain consistant shocks.
Even better is to measure the amount of oil needed to fill each shock to get the consistancy you want, then just put exactly the same in the opposite side. then you know each shock has the same amount of air and oil.

the last technique, i apprieciate, is a fiddly task but once you get the hang of it you will feel the difference on the track.

hope this info helps.