Ill try to upload some pics, ive come here to find out so i hope youir forumers are helpful!
back wheel is 'wobbly'. that is to say when i 'spin' it the wheel moves around. The pedals move slightly and the gears 'jump'. I believe its something to do with the wheel wobbling around on the actual (axle?) like the middle bit is loose and the bit where the ballbearings and stuff are is loose. sorrry for massacring any terminolgoy there. I am new to cycling and this is my first bike that wasnt a mountain bike or $100 dollars from kmart.