GS400 Brake pedal soft.


Hi gang, did a full systems swap from a 99'GS into my 91LS. I'm having a problem with the brake pedal being soft. I've bled them 5 times now. Is there some trick with the hydro booster? It stops, but pedal travel is really long which is a confidence buster on the race track. I can't adjust the plunger per manual due to the swap - "At rest" the plunger lines right up with the hole with the pedal on the stop (that's right isn't it, or do I need to adjust the plunger a little longer than that?)