I have a question about the bulkheads on my internal overflow. At the outlet of it is a slip fitting, i was going to glue a 1-1/2" slip to 1-1/4" FNPT fitting then attach it to my 1-1/4" tee. Do i need to glue in a fitting, i have read that you can wrap some teflon tape around the slip fitting then put it in the fitting. have any off you tried this with success. Thanks for now, Al