Is it too short in length or width? If lenght then just weld a 10mm plate on the end facing the opposite wall. If it is width then you might have to do a bit of creative welding to sort it out. Or take it back to your supplier and get them to remake it... don't fancy your chances there though.Here is the transfer tube and the underside plate. I think that i might have an issue here in that the tube is 10mm short. I presumed that it was cut and bent to the size i gave the shop that cut and bent it. I did not measure it when i collected it but for some reason they cut & bent 2 transfer tubes for me. I might have to cut this one even shorter say 75mm and then the 2nd one cut it 85mm and weld it onto the fist transfer tube.