The Little Chestnut I bought last week had a fiber glass patch that I removed as it was coming off.  This is a late Chestnut,  probably a Playmate from the early 70's.  Made in the piecework times as opposed to the hourly wage times and it looks like it.  The fiber glass patch was covering a knife slit in the canvas.  The slit appears to have been made to attempt to repair a plank that had been butted over nothing but the edge of a rib.  In other words the end is free and floating and nothing under it to nail to.  I can think of no way to repair that sort of problem short of dropping the canvas and replacing some planking.  Anyone got any thoughts.