Although I cannot think of another way to reinstall 250 TAP drivers, you could try this:
Keep your current OpenVPN & TAP Utils with 250 TAP devices installed.
Build OpenVPN from the build-system:
https://community.openvpn.net/openvpn/wiki/BuildingUsingGenericBuildsystem#Cross-compilingonNIXgenericsubdir
Update OpenVPN Only from the build above .. which does
not require you re-install OpenVPN & TAP.