Ok,

Let me chime in so you understand what I'm telling you. Running your engine at temps above 200 is a must why? When your engine is at temp the the sleeve expands to allow the piston to move freely through the stroke. With minimum resistance causing less sleeve wear while keeping maximum compression. When the engine is running below temps of 200 the sleeve has not expanded. The sleeve is now pinching the the piston through the entire stroke and even more at tdc. hence a new engine often gets stuck at tdc. you know why it stops getting stuck because yo have worn the tdc pinch down. Which is going to happen anyway. Your just making it happen prematurely and at cold temps its wearing more than it should. Continued running at low temps will eventually wear the sleeve prematurely making for an early grave. Why do you think everyone tells you when your breaking your engine in get it up to temp quickly. Preheat your engine before starting when breaking your engine in.

1. so the piston won't get stuck at tdc from a cold sleeve that has not expanded.
2. so you don't wear your pinch prematurely and or more than it will wear through normal use.
3. so the engine is easier to turn over the piston and sleeve are not tight placing unwanted stress on your conrod
3. So your engine life is as long as it can be.

cold engine that is difficult to turn over with plug out thats called pinch
cold engine thats is easy to turn over with plug out thats called a paperweight

warm engine thats difficult to turn over with plug in thats called compression
warm engine that has slight resistance with plug out thats called broken in

Perfect example of a engine that has died from sleeve wear. Engine runs great and has power until it reaches temp then it cuts out. Due to the sleeve has expanded properly and there is no pinch left to hold compression. ie. sleeve is worn either through running at low temps or has had a long life and it's time to kick the bucket.

Hey you don't have to take it from me run all your engines at 180 from breakin to death. The only thing I can tell you is the period between breakin to death will be short like leprechauns. I wonder why all those guys run around with rolls of aluminum foil rapping there heads to get temps up quickly they are so silly. Silly NASCAR dudes with there cute little engine warmer blankets on the car before the race. Silly car manufactors reminding us that cold starts cause the majority of engine wear. All these silly people doing silly things to warm there engines. Silly plinking noise your engine makes as it cools back down i.e. unexpanding. The world is filledd with such silly people that do such silly things[].