picked up a rm85 for 1200. somthing to ride with my son. he has a lt 80. i was told the guy bought it from a estate sale and it was bored out 105 has a wiesco piston. and a crude load of upgades. he told me about to use 105 octane gas. anybody have any wise words of wisdom. i rode it and for me being 205 pounds it gos to a wheelie when i nail it. ill look at the rest of the upgrades to see what else is on the bike. i tought getting a smaller bike would be good, but im a little scared of the this thing lol.