I was doing some water testing on my new HERMS build and noticed a leak.... I noticed that I can not thread one of my compression fitting into the coupler. The coupler is welded into the kettle. I think the threads in the coupler are messed up.. I can only get a few turns and then it stops. I have used thread tape and still leaks. Is there anything I can do.. Really would like to break in the new brewery this weekend. Thanks in advance for any help or guidance...