The bolt won't easily come out for cleaning. A lot of jiggling of the bolt handle and squeezing of the trigger will work it out though. Also the bore guide will not get past the upright piece (trigger?) and go all the way to the chamber mouth. I've been told that the trigger (single set) is adjusted incorrectly. Any ideas? Or maybe a smith in SE Michigan to recommend?

With the 453 and set trigger, the over-travel sear adjustment makes a big difference. Go to www.rimfirecentral.com. You will find very good information on your CZ trigger. Many CZ Rimfire owners use special bore guides and cleaning rods because of the interference!