Here's this extension ported to a plain sourcepawn plugin using
DHooks with dynamic detour support.
Requires the gamedata file from above. Since the patch to allow sentries to be carried into the spawnarea is outdated and I don't have an old TF2 server_srv.so where the patch signature is still valid for comparison this plugin doesn't have the sentry patch implemented. Which function did you modify, pheadxdll?