Are the zips truely beyond rescue? You could try working a little Fabsil (it`s a waterproofer spray for tents, silicone based, so won`t hurt the outer if it gets on it by accident) onto the zip with a toothbrush and see if that gets it moving. You can get Fabsil in small spray on tins, so not too expensive.
we emailed outwell looking for a new 2 man bedroom for our indiana 8 and we got no reply i keep trying but nothing. if i find some where i'll get back to you.
Have you looked at the cost of replacing zips,it may be cheaper than a new inner,look on ebay you pick a bargin for £££s. Its end of season so prices are not so high.
If you live by a Dunelm Mill shop they sell zips by the meter, then you buy a pack of 'sliders'. I bought a heavy duty zip to put a toilet area in my tent between the two bedroom and it works great.
Putting in zips is easy so don't be put off by that. I am going to France on Friday for a couple of weeks, but if you want me to do the repair when I get back it won't be a problem. You don't live too far from me either so let me know ok.
A day of all things motorhome and campervan. The show is held both in the main indoor arena and across the grounds. Catering, hot drinks and food options are available. Easy access to the site and free parking included. Win one of five pairs of day tickets