I don't know if I am in the right place but I'll try anyway...I have just been going super hero speed on my excercise bike/cross trainer when the foot pedal came off. I have tried putting it back but the big screww will only go in so far, It is turning twice then getting stuck. Can anyone tell me what I need to fix this. I don't know the names of the certain parts ect to search myself. Thank you.