The pedal bottom plate screw is broken, half of it's head is missing. We couldn't find a machine screw the same size with the original one. Only screws at a slightly larger size are available at our local hardware store. Instead of replacing one screw, we decided to replace all three for uniformity. The new screw size is 1/4-28 or 1/4" in total diameter, 28 threads per inch. 

This method was noticed during a tour at Mason & Hamlin piano factory in Haverhill, MA years ago. Renner Academy near Phoenix, AZ teaches hammer angling in a similar way. As always, this is essentially a note to myself. The current method may change in the future.

On the afternoon before this piano was going to be moved back to her school, I was putting all parts together. The fallboard didn't want to lift all the way up. It turned out that we raised the key height too high according to the new action design. The felt on bottom of fallboard was rubbing on key tops. About a week before leaving the shop, the piano shall be put together to make sure nothing goes wrong at the last minute.