Jay has pretty much hit the nail on the head
If you want to see if you have tilt. Focus your camera in different parts of the screen. aka, top left bottom right. if you indeed have tilt then it will show up as where you focused is sharp and everywhere else you have egg stars. Be aware most flatteners/correctors/reducers are sensitive to placement/collimation.
Re: your star sizes, they are perfectly acceptable. Bigger/closer stars will appear bigger in your image.
here is a photo of my 40d and ED80
here and
here and
here
Also have a look at my guide for setting up EQ mounts focusing on Synta brands
here