Greetings fellow boaters and thankyou for past assistance with technical questions I have had. I am sure someone can help me out with this one,it has me stumped. I just got a johnson 140 for parts and want to use the t/t setup for another motor.When I hooked it up to power the motor works but no fluid. Put fluid in and triedagain worked great,BUT, the purge screw ,although tightened all the way was leaking. I then tried to remove screw to see if there was a washer that needed changing but it woudn't come out. I threaded out some but just turned when it got to a certain point. Is there something I don't know about for removal?Is it supposed to come out and washer replaceable? Or is screw perhaps stripped? Thanks.