Hello everyone i used to ride trials a lot when I was younger but stopped when I was 18, 6 years later i've just gone and got a beta Rev 3 270 to get back into it. Was just hoping if anyone knew whats best for my bike such as: 
1. What's best ratio for the oil to petrol 
2. What's the best gear oil to use and how often to change it 
Replays would be greatly appreciated cheers.