Back in April, I ordered a split screen on e-bay and I was having problems with the focus. My pictures were out of focus when the split prism lined up in the view finder. It turns out I had to turn the focus ring away from infinity in order to get the focus confirmation on the K10D.
Well I finally took the time to open it up again. I removed the shim and the focus got worse, having to turn further away from infinity. So I cut one of those sticky pads to size and stuck it on the back of the shim. This improved my focus alot, the prism now line up but is still off a little bit. This whole process took less than five minutes and its cheaper than ordering shims from Pentax.
