High PSI Pressure in filter

[ScroggMonster]

I have a Pentair Whisperflo 6 W/DE filter, top manifold. The Breather tube has a hole in the mesh cap. The manifold has a hairline crack. Could this be the cause of the high pressure? The pressure never goes pass 33psi.
I cleaned the filter, found and replaced a cracked pump impeller. replaced all the seals on the pump.
I replaced all filter grids. brand new
HELP! I have spent money on several different repairs thinking this was the issue.
turns out none are the issue.

 

[mknauss]

Has the filter always had this high pressure?

Typically high filter pressure is indicating the filter needs to be cleaned. Also algae can quickly plug a DE filter.