hey guys

first post here from Australia, just a quick question, I purchased an Imperial 800 series analogue gauge manifold a few months ago and i threw them on a hi wall split and i noticed that the pressures are just plain incorrect. So i got my old refco set out of the van and put them on and they seemed alot better. suction was 900kpa R410-a but the imperials were showing 650 kpa ???

anyone have any idea whats going on ?? all i have done to them was remove the hose keepers and replaced with double sided keepers so the hoses dont just dangle around getting dirt in them.

Thanks
Stuart

p.s sorry if the kpa is confusing, I know you guys use psi, we use kpa in australia haha