I did have a post this morning about the parts of a boss strap not being compatible... sorted that today thanks to you guys here, and bought a boss strap and adaptor from toolstation along with the solvent cement. Fitted the boss by drilling a 51mm hole in the soil pipe which was initially a bit small for the ridge of the boss strap. I opened it up a bit with a file to what I thought was a snug fit. Applied the solvent cement and tightened the boss strap up... ran some water this evening and....... it’s leaking gutted... as everything I’ve replaced so at has been fine both underground and the soil stack and downstairs wastes... my gut is telling me my 51mm hole is too small and the boss isn’t dealing with the cement. Does 51mm seem a bit small? I’m hoping tomorrow it’ll pull off and I can clean everything up and try again.. I’d rather not bodge it so does anyone have any tips as to re-fitting the boss if I can, and if it won’t come off is there anything I can do without cutting my new soil stack apart... thanks in advance everyone!!