i recently bought a kit from a seller on craigslist that was set up for an e-bike recumbant. i thought i could figure out the way to mount it to my old mountain bike without the factory instruction sheet but after a week of improvised parts and frustration i broke down and called the manufacturer in billings montana. he promptly sent me an installation booklet and a throttle cable. the kit is running fine now with a mitsubishi tle43 engine and a 1&1/2 inch roller. i have a staton friction kit with a robin subaru 33 cc motor on another bike so i am getting used to the engagement lever on the d.e. kit. i am still a little confused about the oil gas ratio on the motor. the staton website lists it as 40 to 1 while dimension edge says 50 to 1. any advice would be appreciated!