When weaving crosses, sometimes the string is too slippery for me to weave with just 2 fingers. Instead I have to use a much slower method and it has made my string jobs very slow. When I string with something like wilson synthetic, it was fine and I could weave with 2 fingers but when I string with poly or some different luxilon strings it was too slippery. Is there anything I can do? It usually takes me 45 minutes to an hour to string because of this.