My ‘89 sedan is having idle/stalling issues. I have cleaned my IACV and adjusted the FITV. I think the issues are IACV related, as I have been troubleshooting and seeing what has positive and negative impacts. So now my ‘88 coupe has a tiny little surge starting. I have read 3geez and hondatech posts until my eyes cross. I know it would have an impact (possible when Cool/warming up), but can I block off where the IACV bolts up? Has anyone done it?