A few days ago I found and bought what appeared to be a very common and ordinary Kundo 400 day clock. I am by no means an expert on these clocks but I do have a collection of about 40 of them... most all of them very commonly seen circa 1950's variety as this one is. This clock was complete but had a broken suspension spring so today I made up a new suspension unit to see if it wanted to run as it was. I identified the back plate as 1379.. Once I had the pendulum hanging again I looked through the inspection holes to set the beat and noticed for the first time that this clock had a pin pallet escapement. Upon a little more research using the 400 day guide I read that Kundo only made the pin pallet escapement for a short while and there is even a note on how to convert it to a Graham deadbeat. Apparently there must have been some pitfalls to having the pin pallet escapement in a torsion clock. With only winding the clock and setting the beat with the new suspension spring the clock seems quite robust. I had some fluttering but raised the fork and now I have about 270 degree rotation and at least 3/4 inch overswing in each direction. I can only assume it will run even stronger after a complete overhaul and new mainspring. Does anyone know what problems were common with this escapement that caused them to go back to the deadbeat? Any different adjustments I need to make to ensure it will be a reliable clock?