I think you'll have a real hard time trying to get Bodor to make it right. For one thing a real 40 watt tube is 1010 mm and yours is 700 mm. A 40 watt tube will not fit in your case with out some modifications. You might be in luck if your case has an extension cover on it. But if it doesn't it will need to be cut and an extension case made. I hope it does , will make it a lot easier for them to give you a bigger tube. Good luck.