*** update ***
I wanted to give everyone an update, since it has been a while! So, last weekend I bought two #10 YKK zipper sliders and had them installed by a local zipper pro. Who incidentally is into overlanding himself and just bought himself a Ford Transit van, one of them larger units that he wants to insulate, solar PV and all that fun stuff. I pointed him to this site.
Anyway, the process of replacing the zipper pulls start out at top where it is REALLY hard to access the end of the actual zipper strips. My ex GF did tell me this was the way to go and I didn't believe her; damn if she wasn't spot on.

The ends of the strips are sewn into the canvas and you have to spend a lot of time finding the ends. So, the guy took a pair of dikes and cut into the tracks a little bit near the end, remove the old sliders and installed the new ones. Installing the new slider can be a royal PITA and you might want to ***** slap someone out of frustration just because you REALLY need to express your anger. Afterwards, he sewed the zipper tracks closed so that everything stays in sync and peachy keen.
So, my original sliders/pulls lasted from '02 to '15 so not bad. For $60 ($30/side installed) I now have another ten years of life. Here's what I learned from this experience:
- have patience on this project, otherwise farm it out. I think I had more fun dropping a Tcase then screwing with this project. Actually, I indulged his 420 while he did all the work.
- simply squeezing a zipper pull with pliers is NOT going to work. Here's what happens: the pulls have tiny ridges on the side that forces the zipper to come together under pressure. Over time these tiny ridges simply wear out. Unless you squeeze the absolute **** out of the pulls sideways, it ain't gonna work.
- DON'T take your kamparoo to an upholstery place. Those dumb****s want to replace the whole zipper by pulling the canvas off the trailer and stick it on their machines. Yeah, FAWK that.
- Zippers don't go bad unless you really screwed them up some how and even then, you may have a small section of unzipped but that's not a big deal, considering the alternative.
- If you MUST replace your zipper, the guy suggested loading up the bong with some good 420 and meticulously removing the old zipper using one of these
https://i5.walmartimages.com/asr/a6....jpeg?odnHeight=450&odnWidth=450&odnBg=FFFFFF
- reload the bong, then slowly sew on the new zipper using one of these
http://www.strapworks.com/ProductDe...EKZ1kDRqrzxbDRT7lWq26WCF3vaD2C9RoCDmMQAvD_BwE
- So, you don't know how the hell to use a sewing awl? Go here
https://www.youtube.com/watch?v=c6OatKzjeD0
- See I told you, it's a royal PITA project to replace the zipper of this length.
All in all, this will be couple of cases of beer and many bong refill project :ylsmoke: if you really have to replace the zipper, yeah, I didn't think so. Just replace the sliders before you REALLY muck things up. :coffeedrink: