SR Thermostat housing question....

[DrtyRat]

So I've pretty much redone my entire cooling system(Mishimoto radiator & fan shround, silicone hoses, and nismo thermostat), and I'm going to finish installing them tommorow. My concern is my thermostat housing. I have been running w/no thermostat for a long time now. When I originally removed the stock thermo, I also tapped the housing so I could run the probe for my water temp gauge. The problem I have now, is that when I put my nismo thermostat in, and tried to reinstall the housing, I couldn't b/c the probe was hitting the top of the thermo. I finally was able to reinstall the housing, by removing the probe, reattaching the housing and then screwing the probe back in, but I am only able to get a few of the threads to catch, w/o pressing too hard against the thermostat. I was wondering if you guys think that it will be a problem if only a few threads are in, on the probe. Obviously, I'll be using tape to seal the threads, but could the pressure of the system cause it to leak? I think I'm worrying for nothing, but since SR's don't like to overheat, I'd rather be overcautious. BTW, its an S14 SR.