Pedalbox mot question

OK so I have converted my car to a manual but the pedal box it from a later model so I made 4 spacers to raise the pedal box to give the right amount of pedal travel. I t has worked and the pedal box is solid (no movement at all) but there is a gap between the engine bay and the pedal box body (apart from the studs with the spacers on) I had planned on uploading pictures as hard to explain. A friend who's an mot tester said along as its solid it should pass but he also added if I have an mot tester looking for work they may try failing it. Any ideas as I said would be better if I could add pictures