Canvas/Enclosure zippers stuck

[94Sailfish]

Just bought this 94 Sailfish and the enclosures have been in storage long enough for the zippers to be stuck. I've tried various lubricants but can't get them unstuck. Any ideas?
What about where to get replacement covers if I decide to go that route?

 

[fearnofish]

it's really tough to get the zippers unstuck your best bet is to use a pair of dykes and bend the zipper stopper off. the little metal things under the zipper then replace them. if you break a few teeth just crimp it above that spot. i had to put a screw driver on the zippers and hit them with a hammer just have someone hold the canvas so you don't rip any snaps. if you lube the zipper it cause them to degrade even faster.