hi, have recently fitted strap on boss to soil pipe with solvent weld,i obviously now cannot take off boss...but after leaving it for 24hrs to fully set..i see there is a small leak from bottom of boss ( obviously bad workman....me !...any ideas how i can solve the problem...could i use more solvent weld?..i also have something called solvent cement filler is that any good?..or would it be possible to just seal it with bathroom type sealant ?..any advice would be greatly appreciated..many thanks