Good afternoon guys!

Not sure how many of us still use this forum but trying to get to the bottom of a seemingly never ending issue with a Vac Leak both large and small I have tried a few methods replaced the canister, gas cap ect I have yet too do the vac hoses to and from the canister so the one issue is the CEL's for the large and small leaks any hints tips or tricks out there? also the second question, my vent control in my 2K Dak is Vac controlled would the leak that is causing the code obviously from vacuum loss affect vent control?

Any and all help is greatly appreciated!