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Hi Leptar,
Let's talk off line as I want to find out which bag and where you got it. It sounds like an old set of inserts in that bag. The original inserts did have some reactions to rubber when stored for extended periods, especially in the heat or warm places. Unfortunatelly we cannot control this due to the various different chemicals used by each different rubber manufacturer as JohnR mentioned.
The new tubes we have manufactured however haven't had any melding/melting or bad reaction in over a year of testing in various temperatures on just about every type of rubber we could get our hands on. The only thing that has happened is that some of the pinks & reds have run on the tubes but nothing else. We changed our whole composite mix and blends and tested them before we started using them to try and avoid this, but again, we cannot completely control it as the rubber manufacturers do not divulge or share their chemical mixes with anyone. It is best to use the pouches for the rubber as there won't be any issues and space will be freed up in the bag for the plugs as Tinman noted.
Cal, Plano used to have this problem too many years ago but has since gone to different composites as well. They do all of their mold injection and forming offshore and it is a lot cheaper than the US....about 1/3. Their volume affords them the ability to do this. We do it here and to be completely honest, the tube costs have more than doubled, almost tripled in the last year to year and half and we haven't passed this on to anyone. But that's not the point I understand. We have corrected it to the best of our knowledge going forward even if it is much more costly.
Regards,
Kadir
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