How do I get the Condenser back into my Indesit IS70C Tumble Dryer? ?

I know this sounds like a really daft question! I have taken the condenser out and rinsed it as your'e meant to a million times but on the last occasion I havent been able to fit it back in - i've tried removing the bit that is screwed in with two small screws just to see if without it, it will fit back it but it still won't my boyfriend and I are totally baffled! It still seems to dry without it which is also rather strange but i figure it really should be collecting into the water container via the condenser, any help would be greatly appreciated