I'm looking to improve crawl ratio by means of transfer case reduction gears, dual transfer case kit, or both. My question is what is the optimal crawl ratio for rock crawling/trail riding and what is the best way to achieve this ratio. I currently am running 5.29 gears. I've heard of reduction gears as low as 5 to 1. Are there any lower reduction gears or do you need lower? How does this reduced crawl ratio affect driveability on and off the trail? What should I do?