Ok final update old hob out the pipe for the drain was solid black plastic not the flexy type and is clipped to a wooden Barton so to reinforce he added a couple of clips and filled the open end with some sealant so no smells and no leaks the new hob is in and all working well the guy did a full gas check and all is well, Mobile fitter repair man so he came to us took 50 mins charged £60 bargain so any one in Yorkshire requiring a motorhome mobile repair man he trades under Caravandan and I can highly recommend them.
View attachment 67299
View attachment 67300