I found a nick on the nipple on the rubber plug on my Garrett turbo air recirculation valve. I don't imagine it seals well even with the spring behind it. Any technical reason not to jam a 1/2" freeze plug in the hole to disable air recirculation? I can fit a BB in the vacuum line but there'll still be leakage past the nicked piston.

Thanks,
Sixto
91 300SE
87 300SDL