Here is another plumbing question ..I went to Lowes today to buy 2 threaded bulkhead adapters so I can run my 1 " pipes into both bulkheads and when I went to thread the adapters onto the bulkheads they only went on about 4 or 5 threads then got jammed up real bad .I was able to get them off but is this normal for pvc to bulkheads and how much thread should I have ?I would deff. say more that 4or5 is there any type of pvc lube or something else ? Or would 4-5 be ok for the bulkheads ? It just doent seem right..Thanks Sal :banghead: