I would like to address the first part of this post, in reference to the WG slinging. The WG tire gel works just like most other gels. Key is to put it on thin, do not let it pool in the raised letters, or puddle around the edge of the tire where the wheel meets.
It is water based and will be absorbed by the rubber unless too much is applied or if pooling is occurring. It is also best to let it sit for an hour, this will give the tire time to absorb the product well, and this can vary depending on the temperature outside.
If applied this way you should not receive one ounce of sling. Just a personal note, I use this and the Pinnacle Gel and have received sling before but entirely do to me being lazy AKA I have raised letters! Enough said!