when you come to fix the sprung board...get a piece of wood..3/4 ply or something similar...put it at the back and cut a piece of wood...4 x 2 slightly wider than the inside of the trunk,then uae it like a wedge..to ease the sprung board back...if you don,t have eye contact with the sprung board..you nmay need to make an incision to the cotton interior lining...in order to run in some glue....as for the cleaning of the canvas...once you,ve done it....you can waterproof it,by using diluted Uni-bond...which is a PVA white glue...which needs to be diluted...and when its dry..it dries clear...