Is it just me or are most penstyle carts out there total crap? Recently I purchased rubber-tipped carts from several sources and even a few hard-tip carts and they all have a problem with the filler material rapidly receding into the cartridge after only a few drags. 
Additionally, the filler of the rubber-tipped carts seem to have an adhesive at the bottom (mouth-tip end) of the cart. The cartridges I had purchased a few months ago had none of those issues but the filler in any new carts I have purchased shrink to 3/4 of the amount of filler after the first 5 minutes of use.
Is anyone else experiencing the same issue?
Has anyone found a good reliable source for carts that are not prone to this issue?
Additionally, the filler of the rubber-tipped carts seem to have an adhesive at the bottom (mouth-tip end) of the cart. The cartridges I had purchased a few months ago had none of those issues but the filler in any new carts I have purchased shrink to 3/4 of the amount of filler after the first 5 minutes of use.
Is anyone else experiencing the same issue?
Has anyone found a good reliable source for carts that are not prone to this issue?