Help with Holley

Here's a better pic of spacer you can see a little bit of oil on the right side. There's a notch on spacer where it vents to the front bores. Forgot to mention I always have run the 2.5 pv and never had a power issue on my Fishnautique.

I think it's just a spacer. There is no difference in height. It has some oil in reservoir from the pcv valve. There is a series of baffles in the channel that flows to the front of spacer. The gaskets underneath carb are new. I'll give it a flip and see what happens.

Don't overlook the base gaskets; also some are much better than others. Wedge plate?

Ordered carb rebuild kit off skidim. Took apart carb cleaned everything real good. All the passages seemed real clean as carb cleaner with a straw blew freely through everything even through idle discharge hole. Transfer slot looked correct. Replaced power valve with 2.5 which was in there. I could spin the small end on the old power valve read somewhere this means it's bad.? Replaced accel pump diaphragm. I didn't pull off the secondary housing didn't think was necessary. I put back on and ran boat in yard and idle mix screws were not responsive I could still spin 1 side all the way in before it responded. The other side started to respond maybe 1/8 turn out. Pulled carb a second time and cleaned passages again and same problem. Kinda frustrated now as I feel stuck and been dying to go fish.

Today I sprayed some carb cleaner down the idle circuits and hit them with compressed air right after. Did it multiple times. I ran the engine and it didn't help at all. No vac leak anywhere. Maybe when I was scraping old gasket off a little piece got somewhere it shouldn't be? Would breaking down the carb and cleaning it allow me to get the idle circuits better? This is all a learning experience for me and any advice is greatly appreciated!

Check your initial timing. If it is too retarded it will cause you to have the throttle plates too far open to run off the idle circuits at idle rpm.

If it ran fine before I doubt that is the issue unless the dizzy slipped some how.

My bet might be the idle circuits are plugged up somehow.

I had a vac leak on my spacer gasket so I pulled the carb a Holley 4160. I replaced both gaskets and put back on and ran boat in yard. Idle was so low it was almost stalling. I had to turn the idle screw a full rotation to get the idle about 700. I turned my air mixture screws in all the way in and that's where engine kinda stumbled but would still run. I know this means I have a bad power valve. Looking for a little input before I go tearing into it. The carb is about 3 years old with around 550hr. Ran great last trip.