thankfully, mine is relatively good condition and should last 10 more years..i have a neighbor who works at a canvas shop....he does stuff like on the side..i asked him about a couple of months ago..it is a lot of work, if you want it done properly...he mentioned short-cuts some guys try to take to cut back, etc etc..( i don't remember what the short cuts were)...if he's still around in 10, i'll let him do mine..( i watch his kids sometimes in the evenings when they get home from school, so brownie points i have!)